It's a great mistake, I think, to put children off with falsehoods and nonsense, when their growing powers of observation and discrimination excite in them a desire to know about things.

Certain periods in history suddenly lift humanity to an observation point where a clear light falls upon a world previously dark.

The processes of teaching the child that everything cannot be as he wills it are apt to be painful both to him and to his teacher.

It is a rare privilege to watch the birth, growth, and first feeble struggles of a living mind; this privilege is mine.

Our material eye cannot see that a stupid chauvinism is driving us from one noisy, destructive, futile agitation to another.

We are afraid of ideas, of experimenting, of change. We shrink from thinking a problem through to a logical conclusion.

You cannot touch the clouds, you know; but you feel the rain and know how glad the flowers and the thirsty earth are to have it after a hot day. You cannot touch love either; but you feel the sweetness that it pours into everything. Without love you would not be happy or want to play.