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

Corpses are more fit to be thrown out than is dung.

Learning many things does not teach understanding

All is flux; nothing stays still.

All things come into being through opposition and all are in flux like a river

To God all things are fair and good and right, but men hold some things wrong and some right.

There is nothing permanent except change. Nothing is permanent except change. The only constant is change. Change is the only constant. Change alone is unchanging.