The history of the world is the record of the weakness, frailty and death of public opinion.

All philosophies, if you ride them home, are nonsense, but some are greater nonsense than others.

A sense of humor keen enough to show a man his own absurdities will keep him from the commission of all sins, or nearly all, save those worth committing.

A little knowledge is a dangerous thing, but a little want of knowledge is also a dangerous thing.

The youth of an art is, like the youth of anything else, its most interesting period. When it has come to the knowledge of good and evil it is stronger, but we care less about it.