"It is a man's own mind, not his enemy or foe, that lures him to evil ways"

"Time is the friend of the wonderful company, the enemy of the mediocre"

"The best weapon against an enemy is another enemy"

"It's far easier to forgive an enemy after you've got even with him"

"The body of a dead enemy always smells sweet"

"The idea that a war can be won by standing on the defensive and waiting for the enemy to attack is a dangerous fallacy, which owes its inception to the desire to evade the price of victory"

"I don't have a warm personal enemy left. They've all died off. I miss them terribly because they helped define me"

"The enemy is within the gates; it is with our own luxury, our own folly, our own criminality that we have to contend"

"Go up close to your friend, but do not go over to him! We should also respect the enemy in our friend"

"Its best to weigh the enemy more mighty than he seems"

"Treat your friend as if he might become an enemy"