Everyone needs a warm personal enemy or two to keep him free from rust in the movable parts of his read more

Everyone needs a warm personal enemy or two to keep him free from rust in the movable parts of his mind.

If you have no enemies, you are apt to be in the same predicament in regard to friends.

If you have no enemies, you are apt to be in the same predicament in regard to friends.

One very important ingredient of success is a good, wide-awake, persistent, tireless enemy.

One very important ingredient of success is a good, wide-awake, persistent, tireless enemy.

The best way to destroy an enemy is to make him a friend.

The best way to destroy an enemy is to make him a friend.

Nothing would more contribute to make a man wise than to have always an enemy in his view.

Nothing would more contribute to make a man wise than to have always an enemy in his view.

Let my enemies devour each other.

Let my enemies devour each other.

A man's greatness can be measured by his enemies.

A man's greatness can be measured by his enemies.

The man of knowledge must be able not only to love his enemies but also to hate his friends.

The man of knowledge must be able not only to love his enemies but also to hate his friends.

The best weapon against an enemy is another enemy.

The best weapon against an enemy is another enemy.