The only thing that one really knows about human nature is that it changes. Change is the one quality we can predicate of it. The systems that fail are those that rely on the permanency of human nature, and not on its growth and development. The error of Louis XIV was that he thought human nature would always be the same. The result of his error was the French Revolution. It was an admirable result.

Morality, like art, means drawing a line someplace.

Those who see any difference between soul and body have neither

Arguments are extremely vulgar, for everybody in good society holds exactly the same opinions.

It is in the brain, and the brain only, that the great sins of the world take place also. You, Mr. Gray, you yourself, with yourrose-red youth and your rose-white boyhood, you have had passions that have made you afraid, thoughts that have filled you with terror, day-dreams and sleeping dreams whose mere memory might stain your cheek with shame.

I like persons better than principles, and I like persons with no principles better than anything else in the world.

Life is never fair, and perhaps it is a good thing for most of us that it is not.