Humanity . . . lies in man's capacity to question the known and imagine the unknown.

The negative cautions of science are never popular. If the experimentalist would not commit himself, the social philosopher, the preacher, and the pedagogue tried the harder to give a short-cut answer.

the experience of having brothers and sisters, born of the same parents, sleeping under the same roof, eating at the same table, is an inescapable, delightful and repelling, desired and abhorred part of each child's life.

Children not only have to learn what their parents learned in school, but also have to learn how to learn. This has to be recognized as a new problem which is only partly solved.

Dancing is the only activity in which almost all ages and both sexes participate.

American society is very like a fish society. . . . Among certain species of fish, the only thing which determines order of dominance is length of time in the fishbowl. The oldest resident picks on the newest resident, and if the newest resident is removed to a new bowl, he, as oldest resident, will pick on the newcomers.

What the world needs is not romantic lovers who are sufficient unto themselves, but husbands and wives who live in communities, relate to other people, carry on useful work and willingly give time and attention to their children.