The three great essentials to achieve anything worth while are, first, hard work; second, stick-to-itiveness; third, common sense.

A diamond is a piece of coal that stuck to the job.

We shall have no better conditions in the future if we are satisfied with all those which we have at present.

To have a great idea, have a lot of them.

The doctor of the future will give no medicine but will interest the patient in the care of the human frame, in diet, and in the cause and prevention of disease.

I start where the last man left off.

The doctor of the future will give no medicine but will interest his patients in the care of the human frame, in diet and in the cause and prevention of disease.

Our greatest weakness lies in giving up. The most certain way to succeed is always to try one more time.

Show me a thoroughly satisfied man— and I will show you a failure.

We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy sun, wind, and tide. I’d put my money on the sun and solar energy. What a source of power! I hope we don’t have to wait until oil and coal run out before we tackle that.