It doesn't matter if you try and try and try again, and fail. It does matter if you try and fail, and fail to try again.

The typical eye sees the ten per cent bad of an idea and overlooks the ninety per cent good.

Industry prospers when it offers people articles which they want more than they want anything they now have. The fact is that people never buy what they need. They buy what they want.

Don't be afraid to stumble. Any inventor will tell you that you don't follow a plan far before you strike a snag. If, out of 100 ideas you get one that works, it's enough.

I often say that research is a way of finding out what you are going to do when you can't keep on doing what you are doing now.

Modern psychology teaches that experience is not merely the best teacher, but the only possible teacher.. There is no war between theory and practice. The most valuable experience demands both, and the theory should supplement the practice and not precede it.

We work day after day, not to finish things; but to make the future better ... because we will spend the rest of our lives there.