The only time you mustn't fail is the last time you try.

We have reason not to be afraid of the machine, for there is always constructive change, the enemy of machines, making them change to fit new conditions.

There exist limitless opportunities in every industry. Where there is an open mind, there will always be a frontier.

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.

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

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.

One of the things we have to be thankful for is that we don't get as much government as we pay for.