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

In our contemporary world, no one can think or work with a single picture of what a family is. No one can fit all human behavior, all thought and feeling, into a single pattern.

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.

Our first and most pressing problem is how to do away with warfare as a method of solving conflicts between national groups within a society who have different views about how the society is to run.

There is no greater insight into the future than recognizing...when we save our children, we save ourselves

Warfare ... is just an invention, older and more widespread than the jury system, but none the less an invention.

We must recognize that beneath the superficial classifications of sex and race the same potentialities exist, recurring generation after generation, only to perish because society has no place for them.