Science becomes dangerous only when it imagines that it has reached its goal.

You must all know half a dozen people at least who are no use in this world, who are more trouble than they are worth. Just put them there and say Sir, or Madam, now will you be kind enough to justify your existence? If you can't justify your existence, if you're not pulling your weight in the social boat, if you're not producing as much as you consume or perhaps a little more, then, clearly, we cannot use the organizations of our society for the purpose of keeping you alive, because your life does not benefit us and it can't be of very much use to yourself.

No child should be brought up to suppose that its food and clothes come down from heaven or are miraculously conjured from empty space by papa. Loathsome as we have made the idea of duty (like the idea of work) we must habituate children to a sense of repayable obligation to the community for what they consume and enjoy, and inculcate the repayment as a point of honor.

Changeable women are more endurable that monotonous ones; they are sometimes murdered but never deserted.

Assassination is the extreme form of censorship; and it seems hard to justify an incitement to it on anti-censorial principles.

Every dream is a prophecy: every jest is an earnest in the womb of Time.

The universal regard for money is the one hopeful fact in our civilization.