Science tells us what we can know, but what we can know is little, and if we forget how much we cannot know we become insensitive to many things of great importance.

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

In any closet, you can find it, if it is too small, or out of style, or there is just one of it where there should be two

Diversity is essential to happiness and in Utopia there is hardly any. This is a defect in all planned social systems.

Modern life cannot be constructed on . . . physically strenuous principles. A great deal of work is sedentary, and most manual work exercises only a few specialized muscles.

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

This idea of weapons of mass extermination is utterly horrible and is something which no one with one spark of humanity can tolerate.