The three things that are most essential to achievement are common sense, hard work and stick-to-it-iv-ness.

The value of an idea lies in the using of it.

We haven't failed. We now know a thousand things that won't work, so we are much closer to finding what will.

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

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

Results? Why, man, I have gotten lots of results! If I find 10,000 ways something won't work, I haven't failed. I am not discouraged, because every wrong attempt discarded is often a step forward.

An idea is something that won't work unless you do.