People are not remembered by how few times they fail, but by how often they succeed. Every wrong step is another step forward

I am both pleased but astonished by the fact that mankind has not yet begun to use all the means and devices that are available for destruction. I hope that such weapons are never manufactured in quantity.

Never Say I Failed 99 Times, Say I Discovered 99 Ways Which Causes Failure!

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.

Time is really the only capital that any human being has, and the only thing he can't afford to lose.

The radio craze will die out in time.

I have not failed. I've just found 10,000 ways that won't work.