What nutrition and reproduction are to physiological life, education is to social life.

The only freedom that is of enduring importance is the freedom of intelligence, that is to say, freedom of observation and of judgment, exercised in behalf of purposes that are intrinsically worth while. The commonest mistake made about freedom is, I think, to identify it with freedom of movement, or, with the external or physical side of activity.

That the ulterior significance of every mode of human association lies in the contribution which it makes to the improvement of the quality of experience is a fact most easily recognized in dealing with the immature.

The future of our civilisation depends upon the widening spread and deepening hold of the scientific habit of mind.

There is nothing left worth preserving in the notions of unseen powers, controlling human destiny, to which obedience and worship are due.

Cease conceiving of education as mere preparation for later life, and make it the full meaning of the present life.

Confidence is directness and courage in meeting the facts of life.