In the end, we will remember not the words of our enemies, but the silence of our friends.

The antidote for fifty enemies is one friend.

I count him braver who overcomes his desires than him who conquers his enemies; for the hardest victory is over self.

It is the enemy who can truly teach us to practice the virtues of compassion and tolerance.

I defeat my enemies when I make them my friends.

Unthinking respect for authority is the greatest enemy of truth.

We must, all of us, learn actually not to have enemies, but only confused adversaries who are ourselves in disguise.