You got the impression that he never needed to sleep - just ten-thousand-mile checkups and dust him off occasionally.

Anyone who cannot cope with mathematics is not fully human. At best, he is a tolerable subhuman who has learned to wear his shoes, bathe, and not make messes in the house.

Democracy can survive anything except Democrats

Any group is weaker than a man alone unless they are perfectly trained to work together.

The best things in history are accomplished by people who get tired of being shoved around.

Men are expendable; women and children are not. A tribe or a nation can lose a high percentage of its men and still pick up the pieces and go on ... as long as the women and children are saved.

Happiness lies in being privileged to work hard for long hours in doing whatever you think is worth doing. One man may find happiness in supporting a wife and children. Another may find it in robbing banks. Still another may labor mightily for years in pursuing pure research with no discernible result. Note the individual and subjective nature of each case. No two are alike and there is no reason to expect them to be. Each man or woman must find for himself or herself that occupation in which hard work and long hours make him or her happy.