He who has a thousand friends has not a friend to spare,
And he who has one enemy will meet him everywhere.
—Ali ibn-Abi-Talib
Above all things, never be afraid. The enemy who forces you to retreat is himself afraid of you at that very moment.
—André Maurois
Observe your enemies, for they first find out your faults.
—Antisthenes
Love your enemies; for they shall tell you all your faults.
—Benjamin Franklin
The meeting of two personalities is like the contact of two chemical substances: if there is any reaction, both are transformed.
—Carl Jung
He hasn't an enemy in the world—but all his friends hate him.
—Eddie Cantor
Never explain—your friends do not need it and your enemies will not believe you anyway.
—Elbert Hubbard
You can discover what your enemy fears most by observing the means he uses to frighten you.
—Eric Hoffer
At times one remains faithful to a cause only because its opponents do not cease to be insipid.
—Friedrich Nietzsche
Rejoice not at thine enemy's fall—but don't rush to pick him up either.
—Jewish Proverb
Forgive your enemies, but never forget their names.
—John F. Kennedy
Now the trumpet summons us again—not as a call to bear arms, though arms we need; not as a call to battle, though embattled we are—but a call to bear the burden of a long twilight struggle, year in and year out, "rejoicing in hope, patient in tribulation"—a struggle against the common enemies of man: tyranny, poverty, disease, and war itself.
—John F. Kennedy
The enemy is anybody who's going to get you killed, no matter which side he's on.
—Joseph Heller
The rule is perfect: in all matters of opinion our adversaries are insane.
—Mark Twain
If you want to make peace, you don't talk to your friends. You talk to your enemies.
—Moshe Dayan