Every great advance in science has issued from a new audacity of imagination.

To find out what one is fitted to do, and to secure an opportunity to do it, is the key to happiness.

We can have facts without thinking but we cannot have thinking without facts.

There is no discipline in the world so severe as the discipline of experience subjected to the tests of intelligent development and direction.

The self is not something ready-made, but something in continuous formation through choice of action.

Education is life itself.

Education is not preparation for life; education is life itself.

To be a recipient of a communication is to have an enlarged and changed experience.

Every thinker puts some portion of an apparently stable world in peril and no one can wholly predict what will emerge in its place.