If it were not for injustice, men would not know justice.
He who does not expect will not find out the unexpected, for it is trackless and unexplored
Those who approach life like a child playing a game, moving and pushing pieces, possess the power of kings.
You cannot step twice into the same river.
Ever-newer waters flow on those who step into the same rivers.
No man ever steps in the same river twice, for it's not the same river and he's not the same man.