There is only one corner of the universe you can be certain of improving, and that's your own self.

One of the many reasons for the bewildering and tragic character of human existence is the fact that social organization is at once necessary and fatal. Men are forever creating such organizations for their own convenience and forever finding themselves the victims of their home-made monsters.

I know quite well that one needs ridiculous, mad situations like that; one can't write really well about anything else. Why was that old fellow such a marvelous propaganda technician? Because he had so many insane, excruciating things to get excited about. You've got to be hurt and upset; otherwise you can't think of the really good, penetrating, X-rayish phrases.

Medical science has made such tremendous progress that there is hardly a healthy human left.

In any race between human numbers and natural resources, time is against us.

If the men of the Middle Ages... lived in filth and discomfort, it was not for any lack of ability to change their mode of life; it was because they chose to live this way, because filth and discomfort fitted in with their principles and prejudices, political, moral, and religious.... It was in the power of medieval... craftsmen to create armchairs and sofas that might have rivaled in comfort those of today

Civilization is sterilization.