I cannot explain it; but when difficulties arise, I am not perplexed or doubtful. I know how to meet them.

No matter how mistaken Communist ideas may be, the experience and knowledge gained by trying them out have given a tremendous impetus to thought and imagination.

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

The Great War proved how confused the world is. Depression is proving it again.

Education in the light of present-day knowledge and need calls for some spirited and creative innovations both in the substance and the purpose of current pedagogy.

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.

We have no firm hold on any knowledge or philosophy that can lift us out of our difficulties.