I am giving you examples of the fact that this creature man, who in his own selfish affairs is a coward to the backbone, will fight for an idea like a hero. . . . I tell you, gentlemen, if you can shew a man a piece of what he now calls God's work to do, and what he will later call by many new names, you can make him entirely reckless of the consequences to himself personally.

Beware of false knowledge; it is more dangerous than ignorance.

In the arts of life main invents nothing; but in the arts of death he outdoes Nature herself, and produces by chemistry and machinery all the slaughter of plague, pestilence and famine. ... There is nothing in Man's industrial machinery but his greed and sloth: his heart is in his weapons.

Religion is a great force - the only real motive force in the world; but what you fellows don't understand is that you must get at a man through his own religion and not through yours.

Those who understand the steam engine and the electric telegraph spend their lives in trying to replace them with something better.

I claim to be a conscientiously immoral writer.

Patriotism is a word which always commemorates a robbery.