Notes on Ancient Greek Philosophy

Ancient Greek Philosophy

  • Three Great Original Centers of Philosophy: Greek, Indian, Chinese.

  • Key questions addressed:

    • What is the world made of?

    • How did the world come into being?

    • How can we explain the process of change?

Thales

  • Proposed water as the material cause of all things.

  • Believed in animism: all things possess life or divinity.

Anaximander

  • Introduced the concept of the Apeiron (Boundless) as the fundamental substance.

  • First to construct a celestial map.

  • Proposed evolution: life originated in seas, humans evolved from fish.

  • Developed natural laws devoid of mythological explanations.

  • Cosmological theory: the Earth is cylindrical, floating surrounded by celestial rings.

Anaximenes

  • Believed Air as the fundamental substance, undergoing processes of rarefaction and condensation.

  • Advocated the 'flat-Earth' theory.

Pythagoras

  • Known as the “Father of Numbers,” founded the Pythagorean Brotherhood.

  • Emphasized transmigration of the soul and the importance of knowledge and mathematics in understanding the cosmos.

Heraclitus

  • Proposed the philosophy of change: “Panta Rhei” (everything flows).

  • Emphasized fire as the essence of all change and universal reason (logos).

Parmenides

  • Introduced the logical method based on thought, questioning the nature of being and non-being.

Empedocles

  • Proposed four root elements: Earth, Water, Air, Fire, and two opposing forces: Love and Strife.

Anaxagoras

  • Distinguished Nous (Mind) as a cosmic force that brings order.

  • Rejected the four elements model in favor of infinitely divisible particles called “seeds.”

Democritus

  • Considered the father of Atomism: everything is made of tiny particles (atoms).

  • Advocated a purely materialistic and mechanical view of the universe.

Protagoras

  • A prominent Sophist known for contributions to ethics and epistemology.

  • Introduced skepticism about knowing nature’s truths, focusing on practical problems.

Socratic Philosophers

  • Explored central ethical questions aimed at understanding virtue.

  • Socrates: Emphasized dialogue to stimulate critical thinking; believed virtue arises from knowledge.

  • Plato: Associated moral virtue with balance and harmony of the soul.

  • Aristotle: Defined moral virtue as developed through practice and habit, integrating body and soul as one entity.