Work is the only thing that gives substance to life.

One ought to be ashamed to make use of the wonders of science embodied in a radio set, the while appreciating them as little as a cow appreciates the botanic marvels in the plants she munches.

It is the supreme art of the teacher to awaken joy in creative expression and knowledge.

A true genius admits that he/she knows nothing.

You can't resolve a dilemma with all the very same mind that made it

Knowledge exists in two forms - lifeless, stored in books, and alive, in the consciousness of men. The second form of existence is after all the essential one; the first, indispensable as it may be, occupies only an inferior position.

Growth comes through analogy; through seeing how things connect, rather than only seeing how they might be different.