X-rays ... I am afraid of them. I stopped experimenting with them two years ago, when I came near to losing my eyesight and Dally, my assistant practically lost the use of both of his arms.

Failure is the most effective technique to optimize strategic planning, implementation and processes.

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

Success is based on imagination plus ambition and the will to work.

The greatest discoveries will be along spiritual lines. This is the field where miracles are going to happen. Spiritual power is the greatest underdeveloped power and has the greatest future.

To do much clear thinking a person must arrange for regular periods of solitude when they can concentrate and indulge the imagination without distraction.

The strength of the Constitution, lies in the will of the people to defend it.