Collective fear stimulates herd instinct, and tends to produce ferocity toward those who are not regarded as members of the herd.

Herd pressure is to be judged by two things: first, its intensity, and second, its direction.

Man is a credulous animal, and must believe something; in the absence of good grounds for belief, he will be satisfied with bad ones.

The most essential characteristic of scientific technique is that it proceeds from experiment, not from tradition. The experimental habit of mind is a difficult one for most people to maintain; indeed, the science of one generation has already become the tradition of the next

Human nature being what it is, people will insist upon getting some pleasure out of life.

no one ever gossips about the virtues of others

Few people can be happy unless they hate some other person, nation, or creed.