No man ever steps in the same river twice, for it's not the same river and he's not the same man.
Heraclitus

Man is most nearly himself when he achieves the seriousness of a child at play.
Heraclitus

It is hard to contend against one's heart's desire; for whatever it wishes to have it buys at the cost of soul.
Heraclitus

To God everything is beautiful, good, and just; humans, however, think some things are unjust and others just.
Heraclitus