Words are tools which automatically carve concepts out of experience.

We all know how the size of sums of money appears to vary in a remarkable way according as they are being paid in or paid out.

Sooner or later, false thinking brings wrong conduct.

Evolution: The Modern Synthesis.

As political and economic freedom diminishes, sexual freedom tends to compensatingly increase and the dictator... will do well to encourage that freedom in conjunction with the freedom to daydream under the influence of dope, movies, and radio. It will help to reconcile his subjects to the servitude which is their fate.

The lowest strata are reproducing too fast. Therefore... they must not have too easy access to relief or hospital treatment lest the removal of the last check on natural selection should make it too easy for children to be produced or to survive; long unemployment should be a ground for sterilisation.

We are beginning to realize that even the most fortunate people are living far below capacity, and that most human beings develop not more than a small fraction of their potential mental and spiritual efficiency. The human race, in fact, is surrounded by a large area of unrealized possibilities, a challenge to the spirit of exploration.