Nothing that's good works by itself, you've got to make the damn thing work.

If we did all the things we are capable of doing, we would literally astound ourselves.

I have friends in overalls whose friendship I would not swap for the favor of the kings of the world.

I've never made a mistake. I've only learned from experience.

Absorb ideas from every source.

I will not say I failed 1000 times, I will say that I discovered there are 1000 ways that can cause failure

When there's no experimenting there's no progress. Stop experimenting and you go backward. If anything goes wrong, experiment until you get to the very bottom of the trouble.