A classic is something that everybody wants to have read and nobody wants to read.

Humor, to be comprehensible to anybody, must be built upon a foundation with which he is familiar. If he can't see the foundation the superstructure is to him merely a freak -- like the Flatiron building without any visible means of support -- something that ought to be arrested.

Do good when you can, and charge when you think they will stand it.

You may honestly feel grateful that homeopathy survived the attempts of the allopaths (orthodoxy) to destroy it.

In the beginning of a change the patriot is a scarce man, and brave, and hated and scorned. When his cause succeeds, the timid join him, for then it costs nothing to be a patriot.

Don't wait the time is never just right.

Seventy is old enough. After that there is too much risk.