The world is divided into three kinds of people: A very small group that makes things happen; a somewhat larger group that watches things happen; and a great multitude that never knows what has happened.

I divide the world into three Classes - The few who make things happen, the many who watch things happen, the overwhelming majority who have no notion of what happens.

What society needs is broad men sharpened to a point.

This desire of knowledge and the wonder which it hopes to satisfy are the driving power behind all the changes that we, with careless, question-begging inference, call progress.

Businesses planned for service are apt to succeed businesses planned for profit are apt to fail.

The analytical geometry of Descartes and the calculus of Newton and Leibniz have expanded into the marvelous mathematical method

Those people who think only of themselves, are hopelessly uneducated. They are not educated, no matter how instructed they may be.