For what do we live, but to make sport for our neighbors, and laugh at them in our turn?

It is permitted to learn even from an enemy.

We die of comfort and by conflict live.

When a coward sees a man he can beat, he becomes hungry for a fight.

We often give our enemies the means for our own destruction.

I shall embrace my rival—until I suffocate him.

Perish the universe, provided I have my revenge.

Opposition is not necessarily enmity; it is merely misused and made an occasion for enmity.

The only competition worthy a wise man is with himself.

Do we want laurels for ourselves most, / Or most that no one else shall have any?

An injury is much sooner forgotten than an insult.

The hatred of relatives is the bitterest.

With the dead there is no rivalry.