Published: Jun 4, 2026written by Matt Whittaker, BA History & Asian Studies Busts of four ancient Greek philosophers, left to right; Socrates, Antisthenes, Chrysippos, and Epicurus   Greek philosophers are often called the fathers of philosophy. They are regularly quoted not just by philosophers, but by anyone looking for a deeper understanding. What made this all possible came from the early shift from myth to reason and widespread literacy that enabled the sharing of ideas. What are some of the most inspiring, influential, and mind-bending quotes from ancient Greek philosophers, and what do they mean?   Philosopher Quote Heraclitus “No man ever steps in the same river twice…” Socrates “The only true wisdom is in knowing you know nothing.” Antisthenes “If there were no absurdity, there would be no wisdom.” Democritus “Nothing exists except atoms and space; everything else is opinion.” Epictetus “First say to yourself what would you be; and then do what you have to do.” Aristotle “We are what we repeatedly do. Excellence, then, is not an act, but a habit.” Diogenes …