“Friend, my enemy, I call you out. You, you, you there with a bad thorn in your side. You there, my friend, with a winning air. Who pawned the lie on me when he looked brassly at my shyest secret. With my whole heart under your hammer. That though I loved him for his faults as much as for his good. My friend were an enemy upon stilts with his head in a cunning cloud. -Dylan Thomas”

“If your not my friend, then your my enemy and if your not my enemy then i don't know you.”

“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.”

“And it seemed to me that there were firesFlying till dawn without numberAnd I never found out things-thoseStrange eyes of his-what colour?Everything trembling and singing andWere you my enemy or my friend,Winter was it or summer?”

“If the enemy of my enemy is my friend, then a friend of my enemy, is my enemy.”

“Reveal not every secret you have to a friend, for how can you tell but that friend may hereafter become and enemy. And bring not all mischief you are able to upon an enemy, for he may one day become your friend.”