I love great music and art, but I think 'cubist' songs and paintings are hideous.

Somewhere between the ages of eleven and fifteen, the average child begins to suffer from an atrophy, the paralysis of curiosity and the suspension of the power to observe. The trouble, I should judge, to lie with the schools.

We have merely scratched the surface of the store of knowledge which will come to us. I believe that we are now, a-tremble on the verge of vast discoveries - discoveries so wondrously important they will upset the present trend of human thought and start it along completely new lines .

Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.

Genius is one percent inspiration, ninety-nine percent perspiration.

To do much clear thinking a person must arrange for regular periods of solitude when they can concentrate and indulge the imagination without distraction.

Be courageous! Have faith! Go forward.