Protagoras asserted that there are two sides to every question, exactly opposite to each other.

I am looking for a human.

Calumny is only the noise of madmen.

If your cloak was a gift, I appreciate it; if it was a loan, I'm not through with it yet.

As houses well stored with provisions are likely to be full of mice, so the bodies of those that eat much are full of diseases.

I am not an Athenian or a Greek, but a citizen of the world.

When two friends part they should lock up each other's secrets and exchange keys. The truly noble mind has no resentments.