Heraclitus was a pre-Socratic Greek philosopher from the city of Ephesus, which was then part of the Persian Empire. He exerts a wide influence on Western philosophy, both ancient and modern, through the works of such authors as Plato, Aristotle, the Stoics, Georg Wilhelm Friedrich Hegel, Friedrich Nietzsche, and Martin Heidegger. 535 BC – c. 470 BC; died at about 64. Alive at the same time as The Buddha, Sophocles, Sun Tzu, Confucius, and Pythagoras. Wiki link