We know very little, and yet it is astonishing that we know so much, and still more astonishing that so little knowledge can give us so much power.

I would never die for my beliefs because I might be wrong.

The man who has fed the chicken every day throughout its life at last wrings its neck instead, showing that more refined views as to the uniformity of nature would have been useful to the chicken.

You find this curious fact, that the more intense has been the religion of any period and more profound has been the dogmatic belief, the greater has been the cruelty and the worse has been the state of affairs. In the so called age of faith, when men really did believe the Christian religion in all its completeness, there was the Inquisition, with its tortures; there were millions of unfortunate women burnt as witches; and there was every kind of cruelty practised upon all sorts of people in the name of religion.

We are faced with the paradoxical fact that education has become one of the chief obstacles to intelligence and freedom of thought.

I know a parson who frightened his congregation terribly by telling them the second coming was very imminent indeed, but they were much consoled when they found he was planting trees in his garden.

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