As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.

People love chopping wood. In this activity one immediately sees results.

The whole of science is nothing more than a refinement of everyday thinking.

If you are out to describe the truth, leave elegance to the tailor.

Politics is for the present, but an equation is for eternity.

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.