Memory is man's greatest friend and worst enemy.

Every man should have laws of his own, I should think; commandments of his own, for every man has a different set of circumstances wherein to work--or worry.

My mind has been both my best friend and my worst enemy.

Being a man of very few ideas, he cherished those he had with an exaggerated care.

The way politics divides the world is into friend and enemy.

Tomorrow is no man's gift.