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.

So far as the religion of the day is concerned, it is a damned fake ... Religion is all bunk.

First be sure a thing is wanted or needed, then go ahead.

There is no limit to which a man will not go to avoid thinking.

If I had not had so much ambition and not tried to do so many things, I probably would have been happier, but less useful.

The three things that are most essential to achievement are common sense, hard work and stick-to-it-iv-ness... Unfortunately, many of life's failures are experienced by people who did not realize how close they were to success when they gave up. I have far more respect for the person with a single idea who gets there than for the person with a thousand ideas who does nothing.

When you have exhausted all possibilities, remember this - you haven't.