“It is better for all the world, if instead of waiting to execute degenerate offspring for crime or to let them starve for their imbecility, society can prevent those who are manifestly unfit from continuing their kind. The principle that sustains compulsory vaccination is broad enough to cover cutting the fallopian tubes. Three generations of imbeciles are enough.”

“We believed that it was most desirable that the North should win, we believed in the principle that the Union is indissoluable, we, or many of us at least, also believed that the conflict was inevitable, and that slavery had lasted long enough. But we equally believed that those who stood against us held just as sacred conviction that were the opposite of ours, and we respected them as every men with a heart must respect those who give all for their belief.”

“Certitude leads to violence. This is a proposition that has an easy application and a difficult one. The easy application is to ideoologues, dogmatists, and bullies--people who think that their rigtness justifies them in imposing on anyone who does not happen to suscribe to their particular ideology, dogma or notion of turf. If the conviction of rightness is powerful enough, resistance to it will be met, sooner or later by force. There are people like this in every sphere of life, and it is natural to feel that the world would be a better place without them!”

“To have doubted one's own first principles is the mark of a civilized man.”

“A goose flies by a chart the Royal Geographic Society could not improve.”

“For I say to you in all the sadness of conviction, that to think great thoughts you must be heroes as well as idealists. Only when you have worked alone – when you have felt around you a black gulf of solitude more isolating than that which surrounds the dying man, and in hope and in despair have trusted to your own unshaken will – then only will you have achieved. Thus only can you gain the secret isolated joy of the thinker, who knows that, a hundred years after he is dead and forgotten, men who have never heard of him will be moving to the measure of his thought – the subtle rapture of a postponed power, which the world knows not because it has no external trappings, but which to his prophetic vision is more real than that which commands an army.”

“Alas for those that never sing, But die with all their music in them!”