Philosophers

Thales

Credited with inventing science, calculated the height of pyramids using similar triangles, predicted solar eclipse

Pythagoras

Pure mathematician, founder of Pythagorean Brotherhood, believed "All is number"

Pythagoreans

Believed reality is mathematical, practiced spiritual purification, observed strict loyalty secrecy

Heraclitus

Believed in opposites, everything always moving, "You can never step in the same river twice"

Parmenides

Debated with Socrates, respected by Plato, teacher of Zeno

Zeno of Elea

Student of Parmenides, known for paradoxes like Achilles and the Tortoise

Socrates

Interested in morality, made logical arguments, teacher of Plato

Plato

Founded Plato’s Academy, believed in ideal forms of math, "Let no one ignorant of Geometry enter here"

Platonism

Ideal forms of math do not exist in nature, most things are approximations

Euclid

Known for the Elements, taught at the Library, constructions with straight edge and compass