A nation with a strong base in science and technology is a nation with a strong backbone.

Concern for man and his fate must always form the chief interest of all technical endeavors. Never forget this in the midst of your diagrams and equations.

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.

A scientific man ought to have no wishes, no affections, - a mere heart of stone.

The process of scientific discovery is, in effect, a continual flight from wonder.

Every serious scientific worker is painfully conscious ... of being relegated to an ever-narrowing sphere of knowledge.