Though wisdom is common, yet the many live as if they had a wisdom of their own.

Men who are lovers of wisdom [i.e., philosophers] must be inquirers into many things.

The majority of people have no understanding of the things with which they daily meet, nor, when instructed, do they have any right knowledge of them, although to themselves they seem to have.

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

It is difficult to fight against anger; for a man will buy revenge with his soul.

War is the father and king of all: some he has made gods, and some men; some slaves and some free.

There is harmony in the tension of opposites, as in the case of the bow and lyre.