“It's a sad thing not to have friends, but it is even sadder not to have enemies. ”

“It is sad not to be loved, but it is much sadder not to be able to love.”

“I grunted. “She’s not a delicate princess,” I said. “She’s a warrior. Warriors have enemies. Sometimes warriors get hurt.” I felt my jaws clench. “And then their friends even things up.”

“Speak no ill of a friend, nor even of an enemy.”

“A friend is one who has the same enemies as you have.”

“I have no enemies. But my friends don't like me.”

“My friends, judge me by the enemies I have made.”

“He will never have true friends who is afraid of making enemies.”

“Have all beautiful things sad destinies?”

“Is this one of those keep-your-friends-close-and-your-enemies-closer things?"
"I though it was keep your friends close so you have someone to drive the car when you sneak over to your enemy's house at night and throw up in his mailbox.”