We often miss opportunity because it's dressed in overalls and looks like work
I have friends in overalls whose friendship I would not swap for the favor of the kings of the world.
I have not failed. I've just found 10,000 ways that won't work.
Many of life's failures are people who did not realize how close they were to success when they gave up.
The three great essentials to achieve anything worthwhile are, first, hard work; second, stick-to-itiveness; third, common sense.
If we all did the things we are really capable of doing, we would literally astound ourselves.
When you have exhausted all possibilities, remember this - you haven't.
Genius is one percent inspiration, ninety-nine percent perspiration.
To invent, you need a good imagination and a pile of junk.