We must laugh in the face of our helplessness against the forces of nature - or go insane.

I do not need drugs to be a genius, do not take a genius to be human, but I need your smile to be happy.

One may certainly admire man as a mighty genius of construction, who succeeds in piling an infinitely complicated dome of concepts upon an unstable foundation, and, as it were, on running water.

The promise of this life is imperiled by the very genius that has made it possible.

Men of lofty genius when they are doing the least work are most active.

Genius is seldom recognized for what it is: a great capacity for hard work.