Heraclitus of Ephesus (Ancient Greek: Ἡράκλειτος ὁ Ἐφέσιος—Hērákleitos ho Ephésios; c. 535 – c. 475 BCE) was a pre-Socratic Greek philosopher, a native of the Greek city Ephesus, Ionia, on the coast of Asia Minor.
He was of distinguished parentage. Little is known about his early life and education, but he regarded himself as self-taught and a pioneer of wisdom. From the lonely life he led, and still more from the riddling nature of his philosophy and his contempt for humankind in general, he was called "The Obscure" and the "Weeping Philosopher".
Heraclitus is famous for his doctrine of change being central to the universe, as stated in his famous saying, "You cannot step twice into the same stream".
He believed in the unity of opposites, stating that "the path up and down are one and the same", existing things being characterized by pairs of contrary properties, and other explorations of the concept of dualism. His cryptic utterance that "all things come to be in accordance with this Logos" (literally, "word", "reason", or "account") has been the subject of numerous interpretations
This is our humanity!
(I had to change the initial image because it stoped showing!, the message on the initial image was, "everything is flux, nothing remains the same! which relates to the Heraclitus ideology!)