A blow from your friend is better than a kiss from your enemy.
A doubtful friend is worse than a certain enemy. Let a man be one thing or the other, and we then know how to meet him.
Any non-commissioned officer is more of an enemy to a recruit, any schoolmaster to a pupil, then they are if they were free.
Conformity is the jailer of freedom and the enemy of growth.
Demoralize the enemy from within by surprise, terror, sabotage, assassination. This is the war of the future.
Experience teaches us that it is much easier to prevent an enemy from posting themselves than it is to dislodge them after they have got possession.
Friends are nothing but a known enemy
In the practice of tolerance, one's enemy is the best teacher.
It is easier to forgive an enemy than to forgive a friend.
Know your enemy and know yourself and you will always be victorious
Love all, trust a few, do wrong to none; be able for thine enemy rather in power than use; and keep thy friend under thine own life's key; be checked for silence, but never taxed for speech
Love is the only force capable of transforming an enemy to a friend.
Never interrupt your enemy when he is making a mistake.
Never tell your enemy he is doing the wrong thing.
Self-pity is our worst enemy and if we yield to it, we can never do anything wise in this world.
Tact is the knack of making a point without making an enemy.
The absence of limitations is the enemy of art.
The best way to destroy an enemy is to make him a friend.
The supreme art of war is to subdue the enemy without fighting.
To fight and conquer in all your battles is not supreme excellence; supreme excellence consists in breaking the enemy's resistance without fighting.
To secure ourselves against defeat lies in our own hands, but theopportunity of defeating the enemy is provided by the enemy himself.
When the enemy is relaxed, make them toil. When full, starve them. When settled, make them move.