I have both held and beheld unlimited power and of it I know but one thing. It drives men mad.' - Alexander the Great

A friend's loyalty lasts longer than their memory. Over the course of a long friendship, you might fight with your friend, even get angry with them. But a true friend will forget that anger after a while, because their loyalty to their friend outweighs the memory of the disagreement.

There’s an Oriental saying I like: “If aggression meets empty space it tends to defeat itself.