Machines have altered our way of life, but not our instincts. Consequently, there is maladjustment.

One of the chief obstacles to intelligence is credulity, and credulity could be enormously diminished by instructions as to the prevalent forms of mendacity.

I consider the official Catholic attitude on divorce, birth control, and censorship exceedingly dangerous to mankind.

Some care is needed in using Descartes' argument. "I think, therefore I am" says rather more than is strictly certain. It might seem as though we are quite sure of being the same person to-day as we were yesterday, and this is no doubt true in some sense. But the real Self is as hard to arrive at as the real table, and does not seem to have that absolute, convincing certainty that belongs to particular experiences.

Philosophy seems to me on the whole a rather hopeless business.

Do not feel envious of the happiness of those who live in a fool's paradise, for only a fool will think that is happiness.

To think I have spent my life on absolute muck.