Inferences of Science and Common Sense differ from those of deductive logic and mathematics in a very important respect, namely, when the premises are true and the reasoning correct, the conclusion is only probable.

What was exciting in the Victorian Age, would leave a man of franker epoch quite unmoved. The more prudes restrict the permissible degree of sexual appeal, the less is required to make such an appeal effective.

Machines deprive us of two things which are certainly important ingredients of human happiness, namely, spontaneity and variety.

Envy ... is one form of a vice, partly moral, partly intellectual, which consists in seeing things never in themselves but only in their relations.

So long as there is death there will be sorrow, and so long as there is sorrow it can be no part of the duty of human beings to increase its amount, in spite of the fact that a few rare spirits know how to transmute it.

I've made an odd discovery. Every time I talk to a savant I feel quite sure that happiness is no longer a possibility. Yet when I talk with my gardener, I'm convinced of the opposite.

All forms of fear produce fatigue.