Jessica stopped beside him, said: 'What delicious abandon in the sleep of a child.' He spoke mechanically: 'If only adults could relax like that.' 'Yes.' 'Where do we lose it?' he murmured. 'We do, indeed, lose something,' she said.

The mind commands the body and it obeys. The mind orders itself and meets resistance.

The gravest error a thinking person can make is to believe that one particular version of history is absolute fact. History is recorded by a series of observers, none of whom is impartial. The facts are distorted by sheer passage of time and thousands of years of humanity's dark ages, deliberate misrepresentations by religious sects, and the inevitable corruption that comes from an accumulation of careless mistakes. The wise person, then, views history as a set of lessons to be learned, choices and ramifications to be considered and discussed, and mistakes that should never again be made.

Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.

Killing with the point lacks artistry, but don't let that hold your hand when the opening presents itself.

Clinging to any form of conservatism can be dangerous. Become too conservative and you are unprepared for surprises. You cannot depend on luck. Logic is blind and often knows only its own past. Logic is good for playing chess but is often too slow for the needs of survival.

What do you despise? By this are you truly known.