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.

My definition of an educated man is the fellow who knows the right thing to do at the time it has to be done. You can be sincere and still be stupid.

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

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.

The price of progress is trouble.

The person who doesn't know something can't be done will often find a way to go ahead and do it.

Our imagination is the only limit to what we can hope to have in the future.