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.

Motherhood is a biological fact, while fatherhood is a social invention.

Wonder is very important, because if we never wondered, we would never get to the point of asking questions. Yet wonder may lead people to write poetry or to paint pictures or to pray, as well as to ask the kinds of questions about the world and themselves that can be answered by science.

Sometimes, instead of helping people to advance, a discovery or an invention holds them back.

All of us who grew up before World War II are immigrants in time, immigrants from an earlier world, living in an age essentially different from anything we knew before.

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.

Just as the difference in height between males is no longer a realistic issue, now that lawsuits have been substituted for hand-to-hand encounters, so the difference in strength between men and women is no longer worth elaboration in cultural institutions.