Imagination is more important than knowledge. For knowledge is limited to all we now know and understand, while imagination embraces the entire world, and all there ever will be to know and understand.

Imagination is everything. It is the preview of life's coming attractions.

The most evident difference springs from the important part which is played in man by a relatively strong power of imagination and by the capacity to think, aided as it is by language and other symbolically devices.

In that way imagination and intelligence enter into our existence in the part of servants of the primary instincts.

The ideals which have always shone before me and filled me with the joy of living are goodness, beauty, and truth.

The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.

If A equals success, then the formula is A equals X plus Y and Z, with X being work, Y play, and Z keeping your mouth shut.

The unleashed power of the atom has changed everything save our modes of thinking and we thus drift toward unparalleled catastrophe.

If men as individuals surrender to the call of their elementary instincts, avoiding pain and seeking satisfaction only for their own selves, the result for them all taken together must be a state of insecurity, of fear, and of promiscuous misery.

You cannot simultaneously prevent and prepare for war.