I would maintain that thanks are the highest form of thought, and that gratitude is happiness doubled by wonder.

If I were not Alexander, I should wish to be Diogenes.

Laughter is not at all a bad beginning for a friendship, and it is far the best ending for one.

Great ideas often receive violent opposition from mediocre minds.

It is better to lead from behind and to put others in front, especially when you celebrate victory when nice things occur. You take the front line when there is danger. Then people will appreciate your leadership.

Think how hard physics would be if particles could think.

Men do not differ much about what things they will call evils; they differ enormously about what evils they will call excusable.