It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.

I am long on ideas, but short on time. I expect to live to be only about a hundred.

I am 67, but I'm not too old to make a fresh start.

A failure teaches you that something can't be done-that way.

Genius is one percent inspiration and ninety-nine percent perspiration. As a result, a genius is often a talented person who has simply done all of his homework.

Genius is 1 percent inspiration, 99 percent perspiration.

Religion is all bunk.