Whatever the number of a man's friends, there will be times in his life when he has one too few; but if he has only one enemy, he is lucky indeed if he has not one too many.
- Bulwer-Lytton, Edward Robert

Observe your enemies, for they first find out your faults.
- Antisthenes

You can discover what your enemy fears most by observing the means he uses to frighten you.
- Hoffer, Eric

Be assured those will be thy worst enemies, not to whom thou hast done evil, but who have done evil to thee. And those will be thy best friends, not to whom thou hast done good, but who have done good to thee.
- Lavater, Johann Kaspar

If we could read the secret history of our enemies we should find in each man's life sorrow and suffering enough to disarm all hostility.
- Longfellow, Henry Wadsworth

Whoever benefits his enemy with straightforward intention that man's enemies will soon fold their hands in devotion.
- Nagarjuna

Method is more important than strength, when you wish to control your enemies. By dropping golden beads near a snake, a crow once managed To have a passer-by kill the snake for the beads.
- Nagarjuna