You cannot step into the same river twice.
Man is most nearly himself when he achieves the seriousness of a child at play.
Learning many things does not teach understanding.
No man ever steps in the same river twice, for it’s not the same river and he’s not the same man.
No man could step into the same river twice, as the man and the river have since changed.
Nothing endures but change. There is nothing permanent except change. All is flux, nothing stays still.
To me one man is worth ten thousand if he is first-rate.
The Sibyl, with frenzied mouth uttering things not to be laughed at, unadorned and unperfumed, yet reaches to a thousand years with her voice by aid of the god.
Men who wish to know about the world must learn about it in its particular details.
Our envy always lasts longer than the happiness of those we envy.
History is a child building a sand-castle by the sea, and that child is the whole majesty of man’s power in the world.
What are men? Mortal gods. What are gods? Immortal men.
Nature is wont to hide herself.
Couples are wholes and not wholes, what agrees disagrees, the concordant is discordant. From all things one and from one all things.
All things come out of the one, and the one out of all things.
Abundance of knowledge does not teach men to be wise.
The way up and the way down are one and the same.
Wisdom is one thing, to know how to make true judgment, how all things are steered through all things.
Ever-newer waters flow on those who step into the same rivers.
Justice will overtake fabricators of lies and false witnesses.