Radio is just a fashion contrivance that will soon die out. It is obvious that there never will be invented a proper receiver!

The biggest failure of man is that he gives up before he realizes how close he was to success.

What is a college? An institute of learning. What is a business? An institute of learning. Life, itself, is an institute of learning.

Of the 200 light bulbs that didn't work, every failure told me something that I was able to incorporate into the next attempt.

Not only will atomic power be released, but someday we will harness the rise and fall of the tides and imprison the rays of the sun.

When you become quiet, it just dawns on you

I believe that the motion picture is destined to revolutionize our educational system and that in a few years it will supplant largely, if not entirely, the use of textbooks.