Never cast pearls before swine.

I believe in the honest craft of workmen.

The first principle of freedom is the right to go to hell in your own handbasket.

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.

There are two ways of forming an opinion. One is the scientific method; the other, the scholastic. To the scientific mind, experimental proof is all-important, and theory is merely a convenience in description, to be junked when it no longer fits. To the academic mind, authority is everything, and facts are junked when they do not fit theory.

It may be better to be a live jackal than a dead lion, but it is better still to be a live lion. And usually easier.

Customs tell a man who he is, where he belongs, what he must do. Better illogical customs than none; men cannot live together without them.