The assumption that men were created equal, with an equal ability to make an effort and win an earthly reward, although denied every day by experience, is maintained every day by our folklore and our daydreams.

With the exception of the few cases to be discussed in the next chapter, adolescence represented no period of crisis or stress, but was instead an orderly developing of a set of slowly maturing interests and activities.

If one cannot state a matter clearly enough so that even an intelligent twelve-year-old can understand it, one should remain within the cloistered walls of the university and laboratory until one gets a better grasp of one's subject matter.

Our first and most pressing problem is how to do away with warfare as a method of solving conflicts between national groups or between groups within a society who have different views about how the society is to be run. If you look back, you will see that warfare was an invention, just as ways of handling government or taxes are inventions. You will see, too, that once people use an invention they go on using it until they find another which they think is superior.

Earth Day is the first holy day which transcends all national borders, yet preserves all geographical integrities, spans mountains and oceans and time belts, and yet brings people all over the world into one resonating accord, is devoted to the preservation of the harmony in nature and yet draws upon the triumphs of technology, the measurement of time, and instantaneous communication through space.

The most extraordinary thing about a really good teacher is that he or she transcends accepted educational methods. Such methods are designed to help average teachers approximate the performance of good teachers.

We must have...a place where children can have a whole group of adults they can trust.