Early Greek Philosophers: Pre-Socratics and Socrates
The Pre-Socratics
And Socrates
6
Th
and 5
Th
century BCE Greek thinkers
Early civilizations
Began in the
Fertile Crescent
region of southwest
Asia. The emergence of civilization is associated with
Agricultural
Revolution
occurred in various locations between 8,000 and 5,000
BCE.
8000 BCE
Civilization begins (?)
5000 BCE
Philosophy Begins
Birth of Christ
600 BCE
600 CE
Ancient Philosophy
Medieval Philosophy
Modern Philosophy
Begins
Modern Philosophy
Post-Modern
Philosophy
1500 CE
1945-50
Present
Philosophy Timeline
*Why were “pre-Socratics”?
Socrates is such an important figure in Western philosophy that we divide
ancient philosophy into classical and pre-Socratic philosophers.
Socrates lived c. 469 BC – 399 BC
Presocratics introduced a new way of thinking about the world:
They went beyond Greek mythology.
Thales of Miletus
(624-546
B.C.E)
A witty maid-servant saw Thales tumbling into a well and said that he
was so eager to know what was going on in heaven that he could not see
what was before his feet.
First who studied astronomy.
Foretold the eclipses and motions of the sun in 585.
Divided the year into 365 days.
Measured pyramids by watching their shadows.
Landmass ends at water’s edge; so,
earth is floating on water
.
Main doctrine:
He asserted water to be the principle of all things:
Thales was poor, so people believed the study of philosophy was
useless. Through his knowledge of astronomy, Thales perceived that
there would be a large harvest of olives that year. While it was still
winter, he put deposits on all the olive oil businesses. He obtained
them at a low price.
When the season came for making oil, many people wanted the
rights, and he sold them all at once for whatever terms he pleased;
raising a large sum of money, he convinced everyone that it was easy
for philosophers to be rich if they chose it, but that was not what
they aimed at. [Aristotle, Politics, 1.11]
According to Aristotle [Politics, 1.11]
“Thales said the principle is water (for which reason he declared
that the earth rests on water). Perhaps he got this notion from
seeing that the nutrition of all things is moist, and that heat itself is
generated from the moist and kept alive by it (and that from which
they come to be is a principle of all things). Perhaps he also got his
notion from the fact that the seeds of all things have a moist nature,
and that water is the origin of the nature of moist things.”
Thales’s Doctrine
•
Thales thought that reality is composed of only
one
thing, with all different things that we
experience being nothing but various forms of
water.
•
The task of metaphysics is to identify the
primary substance and to equate it with reality.
•
S
ince what we perceive through the senses is
not one thing, but many, Thales thought that
reality could be known by reasoning about it.
•
By approaching it through
intellectual
knowledge
, not
sense perception
.
•
Thales had in mind the distinction between
appearances
and
reality
. The commonsense
world known through the senses appears to be
very different from the real world, known
through the mind.
•
What is real is different from what appears to
my senses to be real.
•
Thales introduced this new philosophical way
of thinking about the world, a way that
replaced mythological thinking.
Anaximander (
c. 610 – c. 546 BC
)
Student of Thales.
Invented the sundial, he also made clocks.
First to draw a map of the earth.
Earth cannot float on water. Where does water float on?
He argued that the force of opposites held it there.
the Unlimited is not itself a particular kind of thing, like water.
The principle and primary element of all things was the
Unlimited or
boundless
“The boundless is the original material of existing things;
further, the source from which existing things derive their
existence is also that to which they return at their
destruction, according to necessity.”
Anaximander is the first of the Greeks to
write his ideas
According to Aristotle [
Physics
, 3.3]
“There is a body distinct from the elements,
the boundless
,
which is not air or water, in order that the other things may
not be destroyed by their infinity. The elements are in
opposition to each other: air is cold, water moist, and fire
hot. Therefore, if any one of them were infinite, the rest
would have ceased to be by this time. Thus, he said that
what is infinite is something other than the elements, and
from it the elements arise.”
•
He argued that the basic stuff of reality is the
“Unlimited”.
•
For Anaximander everything originates from and
dissolves into the Unlimited.
•
Every change involves a conflict of opposites.
•
He held a primitive theory of evolution to account
for how the many kinds of things that now exist
evolved from the unlimited.
•
Anaximander’s mysterious concept of the
“Unlimited” uncannily resembles our
contemporary notion of “energy”.
•
Furthermore, Anaximander argued that the
earth does not rest on a vast ocean of water, as
Thales held, and as many believed to be true at
that time.
•
Instead, he believed that it hangs suspended at
the center of the universe by the force of
opposites.
Anaximenes
(
b. 585 BCE, d. 528 BCE
)
Student of Anaximander
Dismissed the theory of Anaximander: earth must be supported by
something—by air.
Said that the principle of everything was the air, “As our souls, being air,
hold us together, so breath and air embrace the entire universe.”
Disagrees with Thales that water is the ultimate basis of reality.
Does not agree with Anaximander that the source of all things can be
some vague, poetic entity such as the Unlimited.
Air is all around us. It is necessary for life to breathe it. It fills the sky,
and upon it floats the earth.
He said the three elements, earth, fire and water, arose from the air:
condensation
and
rarefaction.
Pure air is the most rarefied substance, but
it can condense into heavier and heavier forms. according to degree of
condensation—fire, wind, clouds, water, and earth are formed.
Pythagoras (582-496 BCE
)
Wrote books on Education, on Politics, and on Natural Philosophy.
Discovered that the square of the hypotenuse of a right-angled
triangle is equal to the squares of the sides containing the right angle.
Introduced the idea of “square” and “cube” of a number.
That
the soul is something different from life and is immortal
.
That the soul of man is divided into three parts:
intuition, reason ,
and mind.
The nature of reality is constituted by
numbers/proportions/mathematical relations.
Two types of mathematical ratios were especially important for
Pythagoras: the Tetractys and musical harmony.
The Tetractys is a mystical symbol involving ten points arranged in
four rows: one, two, three, and four points in each row respectively:
*
**
***
****
The four rows represent earth, air, fire and water, and various
combinations of the points generate important numbers and ratios.
•
The Tetractys represents the harmony and
organization of the cosmos.
•
Harmony is a system of three intervals: the fourth,
the fifth, and the octave. The proportions of these
three intervals are found in the four numbers
•
The relationships between musical notes-harmony,
may be expressed numerically.
A fifth is an interval
corresponding to a pair of
pitches with a frequency ratio
of 3:2
A fourth is an interval of
frequency ration of 4:3
an octave is the interval
between one musical pitch
and another with double its
frequency.
•
Mathematics is the keys to unlocking the secrets of reality. For
Pythagoreans, reality is number.
•
“Number is the ruling and self-creating bond which
maintains the everlasting stability of the things that
compose the universe.”
•
Pythagoras said that the soul is immortal, and it changes into
other kinds of animals.
•
The things that happen recur at certain intervals, and nothing is
new.
•
All things that come to be alive are akin.
Heraclitus (535-475 BCE)
Everything is constantly changing; nothing is permanent.
Everything is a coming together of opposites: the path up to the mountain and the
path down are the same path; the young you and the old you are the same you.
Everything flows on like a river—everything is a
flux
.
"You can't step into the same river twice”.
Identified reality with fire. “There is exchange of all things for fire and of fire for
all things…”
Change is the law of life, and there is nothing definite in the universe.
“This universe, which is the same for all, has not been made by any god or man,
but it always has been, is, and will be—an ever-living fire, kindling itself by
regular measures and going out by regular measures.”
“Everything flows and nothing abides; everything gives new way and nothing stays
fixed.”
•
For Heraclitus there is nothing permanent.
“You cannot step into the same river, for other
waters and yet others go ever flowing on.”
•
In another curious passage he appears to
identify reality with one of the four elements,
fire. “There is exchange of all things for fire
and of fire for all things, as there is of wares
for gold and gold for wares.”
•
At the deepest core of reality is a creative
process, a synthesis of opposing elements,
where “cool things become warm, the warm
grows cool; the moist dries, the parched
becomes moist.”
•
This process gives rise to change—fire from
earth, air from fire, water from air and earth
from water.
•
Heraclitus calls this pattern the
Logos
, the
rational order of the cosmos.
Parmenides of Elea (510-440 BCE)
Nothing changes, everything is permanent, everything is Being.
If what is real, Being, is what can be thought or said, and if not-
being cannot be thought or said, then reality is only Being. There is no
not-being.
Being is eternal. It was not created nor can it be destroyed.
Everything that Is did not “become” what it is, for then it would
have had to not-be before it was.
Nothing comes out of nothing: everything must always have existed.
Being is One
Reality must be/universe must be one single unchanging entity.
When we experience change is because it occurs within an
unchanging system.
It is a fixed and frozen unity, always has been, and always will be
that way.
•
Parmenides said nothing changes, that
everything is permanent, that everything is
what he called
Being
.
•
Things change their location (motion) or
change from one sort of thing to another (wood
becomes heat and ashes when burned) or
change a property (a banana changes color
from green to yellow).
•
Parmenides drew the distinction between
appearances (“mere seeming”).
•
On the one hand, there are the senses that that
produce opinion.
•
On the other hand, we have our minds that
deliver reality to us.
•
For Parmenides, All is One and One is all
(Being).
•
Being is eternal. It was not created, nor can it be
destroyed. It simply is.
•
It has no beginning because if it did, Being
would have to come from not-being.
•
So, everything that is did not “become” what it
is, for then it would have to exist before it came
into existence. Not
•
So Being just is, eternally.
•
Being is indestructible. It cannot cease to be
because, again, it would have to pass from Being
to not-being.
•
I know you’re thinking, that coming to be and
passing away are real. An apple is eaten and
changes to human flesh.
•
None of this really happens, says Parmenides; it
appears to the senses that it does.
•
Change is a mere illusion. It is what the senses
tell us about the world.
•
Parmenides claims that Being is indivisible. It
cannot be divided into parts that can be named.
•
There are no separate kinds of things.
•
If it had parts, it would have divisions, and
divisions are not-being, or nothing.
•
Divisions are the “holes” between beings and
thus, do not exist.
Zeno of Elea (490-430 BCE)
Zeno's paradoxes
are a set of philosophical
problems to support his teacher’s, Parmenides,
doctrine that "all is one" and that, contrary to the
evidence of our senses, the belief in plurality and
change is mistaken.
motion is illusory
.
The paradox of the stadium runner: Imagine that a runner sets off on a
racetrack. Before he can reach the finish line, he must pass the
halfway point. Before he can do that, though, he must pass the 1/4-
way point, and before that the 1/8-way point, and so on to infinity.
The runner would have to cross an infinite number of way points in a
finite time, and thus can never reach his goal.
Anaxagoras (500-428 BCE)
that the sun was a mass of burning iron, greater than Peloponnesus, and that
the moon contained houses, and also hills and ravines
The winds he thought were caused by the rarification of the atmosphere,
which was produced by the sun. Thunder, he said, was produced by the collision
of the clouds; and lightning by the rubbing together of the clouds.
Earthquakes were produced by the return of the air into the earth.
All animals he considered were originally generated out of moisture, and heat,
and earthy particles: and subsequently from one another.
It is said that he was persecuted for impiety because he said that the sun was a
fiery ball of iron.
the world is comprised of infinitely divisible portions of elements that are set
in motion by a cosmic Mind.
Leucippus (c550 BCE)
Democritus (460-370 BCE)
his principal doctrines were, that all things were infinite, and were
interchanged with one another.
that the universe was a vacuum, and full of bodies; also that the worlds were
produced by bodies falling into the vacuum.
that the nature of the stars originated in motion.
he was the first philosopher who spoke of atoms as principles.
Here is how Aristotle described his theory:
“According to the theory of Democritus it is the nature of the
eternal objects to be tiny substances infinite in number. Accordingly,
he postulates also a place for them that is infinite in magnitude,
which he designates by these names—the void, the nothing and the
infinite; whereas he speaks of each individual atom as the yes-thing,
the dense, and being. He conceives them as so small as to elude our
senses, but as having all sorts of forms, shapes, and different sizes.
Treating these as elements, he conceives of them as combining to
produce visible and otherwise perceptible objects.”
Protagoras (481-420 BCE)
In every question there were two sides to the argument exactly opposite
to one another: "Man is the measure of all things”
“Concerning the Gods, I am not able to know to a certainty whether they
exist or whether they do not. For there are many things which prevent one
from knowing, especially the obscurity of the subject, and the shortness of
the life of man.”
he was banished by the Athenians. And his books were burnt in the
market-place.
Instituted contests of argument and charged money to teach how to win
arguments. (sophism).
Xenophanes (570-470 BCE)
He wrote philosophical poems and disputed the things Hesiod and Homer said
about the Gods.
He thought that the clouds were produced by the vapor that was borne upwards
from the sun.
Xenophanes thought that our concepts of things are relative to the perceiver; he
writes,
“If god had not made brown honey, people would think that figs are far sweeter
than they do think of about them.”
This may be the first written account of the philosophical position of relativism.
That God was in no respect resembling man. He writes:
“But if (horses) or cows or lions had hands
To draw and produce works of art as men do,
Horses would draw the figures of gods like horses
And cows like cows, and they would make their
bodies Just as the form which they each have
themselves. Ethiopians say that their gods are snub-nosed
and black, and Thracians that theirs have blue eyes and
red hair.”
•
Socrates wrote nothing. Yet he’s the most important
philosopher who ever lived.
•
He was ugly.
•
Embraced poverty.
•
Went about barefoot.
•
Always engaged in deep discussions, but never charged a fee.
•
In fact, he always said that he knows nothing and cannot teach
anything.
•
High opinion of women (He claimed to have learned from
women, one of whom was his mom)
•
Against pederasty.
•
Against democracy.
•
Claimed a spirit guided him, which was an insult to Athenian
religion
(470-399 BCE)
•
Philosophers, are “lovers” of wisdom, interested
in discovering what life is all about and what the
best way to live it is.
•
They are not content with simply living but want
to examine life and improve it.
•
The famous phrase attributed to Socrates: “The
unexamined life is not worth living.”
•
F
or Socrates the true self is the soul, not the body.
•
The soul, not the body, is the true self, the real
self.
•
S
ince I am my soul, happiness comes from
satisfying the deepest desires of the soul.
•
The life of wisdom and virtue, the life of the
philosopher, is the happy life.
•
He believed that if a person truly
knew
what was
right, then he would
do
it.
The End
Ancient Greek thinkers like Thales of Miletus laid the foundation for Western philosophy by moving beyond mythology to explore the principles of the natural world. Socrates, a pivotal figure, introduced new ways of thought. This era marked a shift towards critical thinking and rational inquiry, shaping the course of philosophy for centuries to come.
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The Pre-Socratics And Socrates 6Th and 5Th century BCE Greek thinkers
http://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Levant.gif/300px-Levant.gifhttp://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Levant.gif/300px-Levant.gif Early civilizations Began in the Fertile Crescent region of southwest Asia. The emergence of civilization is associated with Agricultural Revolution occurred in various locations between 8,000 and 5,000 BCE.
Philosophy Timeline Birth of Christ 8000 BCE 5000 BCE Present 600 BCE 1945-50 600 CE 1500 CE Civilization begins (?) Modern Philosophy Begins Post-Modern Philosophy Ancient Philosophy Modern Philosophy Philosophy Begins Medieval Philosophy
*Why were pre-Socratics? Socrates is such an important figure in Western philosophy that we divide ancient philosophy into classical and pre-Socratic philosophers. Socrates lived c. 469 BC 399 BC Presocratics introduced a new way of thinking about the world: They went beyond Greek mythology.
Thales of Miletus (624-546 B.C.E) A witty maid-servant saw Thales tumbling into a well and said that he was so eager to know what was going on in heaven that he could not see what was before his feet. First who studied astronomy. Foretold the eclipses and motions of the sun in 585. Divided the year into 365 days. Measured pyramids by watching their shadows. Landmass ends at water s edge; so, earth is floating on water. Main doctrine: He asserted water to be the principle of all things:
Thales was poor, so people believed the study of philosophy was useless. Through his knowledge of astronomy, Thales perceived that there would be a large harvest of olives that year. While it was still winter, he put deposits on all the olive oil businesses. He obtained them at a low price. When the season came for making oil, many people wanted the rights, and he sold them all at once for whatever terms he pleased; raising a large sum of money, he convinced everyone that it was easy for philosophers to be rich if they chose it, but that was not what they aimed at. [Aristotle, Politics, 1.11]
Thaless Doctrine According to Aristotle [Politics, 1.11] Thales said the principle is water (for which reason he declared that the earth rests on water). Perhaps he got this notion from seeing that the nutrition of all things is moist, and that heat itself is generated from the moist and kept alive by it (and that from which they come to be is a principle of all things). Perhaps he also got his notion from the fact that the seeds of all things have a moist nature, and that water is the origin of the nature of moist things.
Thales thought that reality is composed of only one thing, with all different things that we experience being nothing but various forms of water. The task of metaphysics is to identify the primary substance and to equate it with reality.
Since what we perceive through the senses is not one thing, but many, Thales thought that reality could be known by reasoning about it. By approaching it through intellectual knowledge, not sense perception.
Thales had in mind the distinction between appearances and reality. The commonsense world known through the senses appears to be very different from the real world, known through the mind. What is real is different from what appears to my senses to be real.
Thales introduced this new philosophical way of thinking about the world, a way that replaced mythological thinking.
Anaximander (c. 610 c. 546 BC) Student of Thales. Invented the sundial, he also made clocks. First to draw a map of the earth. Earth cannot float on water. Where does water float on? He argued that the force of opposites held it there. the Unlimited is not itself a particular kind of thing, like water. The principle and primary element of all things was the Unlimited or boundless
Anaximander is the first of the Greeks to write his ideas The boundless is the original material of existing things; further, the source from which existing things derive their existence is also that to which they return at their destruction, according to necessity.
According to Aristotle [Physics, 3.3] There is a body distinct from the elements, the boundless, which is not air or water, in order that the other things may not be destroyed by their infinity. The elements are in opposition to each other: air is cold, water moist, and fire hot. Therefore, if any one of them were infinite, the rest would have ceased to be by this time. Thus, he said that what is infinite is something other than the elements, and from it the elements arise.
He argued that the basic stuff of reality is the Unlimited . For Anaximander everything originates from and dissolves into the Unlimited. Every change involves a conflict of opposites. He held a primitive theory of evolution to account for how the many kinds of things that now exist evolved from the unlimited. Anaximander s mysterious concept of the Unlimited uncannily resembles our contemporary notion of energy .
Furthermore, Anaximander argued that the earth does not rest on a vast ocean of water, as Thales held, and as many believed to be true at that time. Instead, he believed that it hangs suspended at the center of the universe by the force of opposites.
Anaximenes (b. 585 BCE, d. 528 BCE) Student of Anaximander Dismissed the theory of Anaximander: earth must be supported by something by air. Said that the principle of everything was the air, As our souls, being air, hold us together, so breath and air embrace the entire universe. Disagrees with Thales that water is the ultimate basis of reality. Does not agree with Anaximander that the source of all things can be some vague, poetic entity such as the Unlimited. Air is all around us. It is necessary for life to breathe it. It fills the sky, and upon it floats the earth. He said the three elements, earth, fire and water, arose from the air: condensation and rarefaction. Pure air is the most rarefied substance, but it can condense into heavier and heavier forms. according to degree of condensation fire, wind, clouds, water, and earth are formed.
Pythagoras (582-496 BCE) Wrote books on Education, on Politics, and on Natural Philosophy. Discovered that the square of the hypotenuse of a right-angled triangle is equal to the squares of the sides containing the right angle. Introduced the idea of square and cube of a number. That the soul is something different from life and is immortal. That the soul of man is divided into three parts: intuition, reason , and mind. The nature of reality is constituted by numbers/proportions/mathematical relations.
Two types of mathematical ratios were especially important for Pythagoras: the Tetractys and musical harmony. The Tetractys is a mystical symbol involving ten points arranged in four rows: one, two, three, and four points in each row respectively: * ** *** **** The four rows represent earth, air, fire and water, and various combinations of the points generate important numbers and ratios.
The Tetractys represents the harmony and organization of the cosmos. Harmony is a system of three intervals: the fourth, the fifth, and the octave. The proportions of these three intervals are found in the four numbers The relationships between musical notes-harmony, may be expressed numerically. an octave is the interval between one musical pitch and another with double its frequency. A fifth is an interval corresponding to a pair of pitches with a frequency ratio of 3:2 A fourth is an interval of frequency ration of 4:3
Mathematics is the keys to unlocking the secrets of reality. For Pythagoreans, reality is number. Number is the ruling and self-creating bond which maintains the everlasting stability of the things that compose the universe. Pythagoras said that the soul is immortal, and it changes into other kinds of animals. The things that happen recur at certain intervals, and nothing is new. All things that come to be alive are akin.
http://ts2.mm.bing.net/images/thumbnail.aspx?q=4815616745668685id=c0d8ddab5a4671a4aa7d067c025edc53http://ts2.mm.bing.net/images/thumbnail.aspx?q=4815616745668685id=c0d8ddab5a4671a4aa7d067c025edc53 Heraclitus (535-475 BCE) Everything is constantly changing; nothing is permanent. Everything is a coming together of opposites: the path up to the mountain and the path down are the same path; the young you and the old you are the same you. Everything flows on like a river everything is a flux. "You can't step into the same river twice . Identified reality with fire. There is exchange of all things for fire and of fire for all things Change is the law of life, and there is nothing definite in the universe. This universe, which is the same for all, has not been made by any god or man, but it always has been, is, and will be an ever-living fire, kindling itself by regular measures and going out by regular measures. Everything flows and nothing abides; everything gives new way and nothing stays fixed.
For Heraclitus there is nothing permanent. You cannot step into the same river, for other waters and yet others go ever flowing on. In another curious passage he appears to identify reality with one of the four elements, fire. There is exchange of all things for fire and of fire for all things, as there is of wares for gold and gold for wares.
At the deepest core of reality is a creative process, a synthesis of opposing elements, where cool things become warm, the warm grows cool; the moist dries, the parched becomes moist. This process gives rise to change fire from earth, air from fire, water from air and earth from water. Heraclitus calls this pattern the Logos, the rational order of the cosmos.
Parmenides of Elea (510-440 BCE) Nothing changes, everything is permanent, everything is Being. If what is real, Being, is what can be thought or said, and if not- being cannot be thought or said, then reality is only Being. There is no not-being. Being is eternal. It was not created nor can it be destroyed. Everything that Is did not become what it is, for then it would have had to not-be before it was. Nothing comes out of nothing: everything must always have existed. Being is One Reality must be/universe must be one single unchanging entity. When we experience change is because it occurs within an unchanging system. It is a fixed and frozen unity, always has been, and always will be that way.
Parmenides said nothing changes, that everything is permanent, that everything is what he called Being. Things change their location (motion) or change from one sort of thing to another (wood becomes heat and ashes when burned) or change a property (a banana changes color from green to yellow).
Parmenides drew the distinction between appearances ( mere seeming ). On the one hand, there are the senses that that produce opinion. On the other hand, we have our minds that deliver reality to us. For Parmenides, All is One and One is all (Being).
Being is eternal. It was not created, nor can it be destroyed. It simply is. It has no beginning because if it did, Being would have to come from not-being. So, everything that is did not become what it is, for then it would have to exist before it came into existence. Not So Being just is, eternally.
Being is indestructible. It cannot cease to be because, again, it would have to pass from Being to not-being. I know you re thinking, that coming to be and passing away are real. An apple is eaten and changes to human flesh. None of this really happens, says Parmenides; it appears to the senses that it does. Change is a mere illusion. It is what the senses tell us about the world.
Parmenides claims that Being is indivisible. It cannot be divided into parts that can be named. There are no separate kinds of things. If it had parts, it would have divisions, and divisions are not-being, or nothing. Divisions are the holes between beings and thus, do not exist.
Zeno of Elea (490-430 BCE) Zeno's paradoxes are a set of philosophical problems to support his teacher s, Parmenides, doctrine that "all is one" and that, contrary to the evidence of our senses, the belief in plurality and change is mistaken. motion is illusory.
The paradox of the stadium runner: Imagine that a runner sets off on a racetrack. Before he can reach the finish line, he must pass the halfway point. Before he can do that, though, he must pass the 1/4- way point, and before that the 1/8-way point, and so on to infinity. The runner would have to cross an infinite number of way points in a finite time, and thus can never reach his goal.
Anaxagoras (500-428 BCE) that the sun was a mass of burning iron, greater than Peloponnesus, and that the moon contained houses, and also hills and ravines The winds he thought were caused by the rarification of the atmosphere, which was produced by the sun. Thunder, he said, was produced by the collision of the clouds; and lightning by the rubbing together of the clouds. Earthquakes were produced by the return of the air into the earth. All animals he considered were originally generated out of moisture, and heat, and earthy particles: and subsequently from one another. It is said that he was persecuted for impiety because he said that the sun was a fiery ball of iron. the world is comprised of infinitely divisible portions of elements that are set in motion by a cosmic Mind.
Leucippus (c550 BCE) Democritus (460-370 BCE) his principal doctrines were, that all things were infinite, and were interchanged with one another. that the universe was a vacuum, and full of bodies; also that the worlds were produced by bodies falling into the vacuum. that the nature of the stars originated in motion. he was the first philosopher who spoke of atoms as principles.
Here is how Aristotle described his theory: According to the theory of Democritus it is the nature of the eternal objects to be tiny substances infinite in number. Accordingly, he postulates also a place for them that is infinite in magnitude, which he designates by these names the void, the nothing and the infinite; whereas he speaks of each individual atom as the yes-thing, the dense, and being. He conceives them as so small as to elude our senses, but as having all sorts of forms, shapes, and different sizes. Treating these as elements, he conceives of them as combining to produce visible and otherwise perceptible objects.
Protagoras (481-420 BCE) In every question there were two sides to the argument exactly opposite to one another: "Man is the measure of all things Concerning the Gods, I am not able to know to a certainty whether they exist or whether they do not. For there are many things which prevent one from knowing, especially the obscurity of the subject, and the shortness of the life of man. he was banished by the Athenians. And his books were burnt in the market-place. Instituted contests of argument and charged money to teach how to win arguments. (sophism).
Xenophanes (570-470 BCE) He wrote philosophical poems and disputed the things Hesiod and Homer said about the Gods. He thought that the clouds were produced by the vapor that was borne upwards from the sun. Xenophanes thought that our concepts of things are relative to the perceiver; he writes, If god had not made brown honey, people would think that figs are far sweeter than they do think of about them. This may be the first written account of the philosophical position of relativism.
That God was in no respect resembling man. He writes: But if (horses) or cows or lions had hands To draw and produce works of art as men do, Horses would draw the figures of gods like horses And cows like cows, and they would make their bodies Just as the form which they each have themselves. Ethiopians say that their gods are snub-nosed and black, and Thracians that theirs have blue eyes and red hair.
Socrates wrote nothing. Yet hes the most important philosopher who ever lived. He was ugly. Embraced poverty. Went about barefoot. Always engaged in deep discussions, but never charged a fee. In fact, he always said that he knows nothing and cannot teach anything. High opinion of women (He claimed to have learned from women, one of whom was his mom) Against pederasty. Against democracy. Claimed a spirit guided him, which was an insult to Athenian religion (470-399 BCE)
Philosophers, are lovers of wisdom, interested in discovering what life is all about and what the best way to live it is. They are not content with simply living but want to examine life and improve it. The famous phrase attributed to Socrates: The unexamined life is not worth living.
For Socrates the true self is the soul, not the body. The soul, not the body, is the true self, the real self. Since I am my soul, happiness comes from satisfying the deepest desires of the soul. The life of wisdom and virtue, the life of the philosopher, is the happy life. He believed that if a person truly knew what was right, then he would do it.
