People see the wrongness in an idea much quicker that the rightness.

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.

I've never heard of anyone stumbling on something sitting down.

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.

Problems are the price of progress. Don't bring me anything but trouble. Good news weakens me.

People think of the inventor as a screwball, but no one ever asks the inventor what he thinks of other people.

All human development, no matter what form it takes, must be outside the rules; otherwise we would never have anything new.