The life and soul of science is its practical application, and just as the great advances in mathematics have been made through the desire of discovering the solution of problems which were of a highly practical kind in mathematical science, so in physical science many of the greatest advances that have been made from the beginning of the world to the present time have been made in the earnest desire to turn the knowledge of the properties of matter to some purpose useful to mankind.

If you study science deep enough and long enough, it will force you to believe in God.

Large increases in cost with questionable increases in performance can be tolerated only in race horses and fancy women.

We only know God in His works, but we are forced by science to admit and to believe with absolute confidence in a Directive Power-in an influence other than physical, or dynamical, or electrical forces.

[Referring to Fourier's mathematical theory of the conduction of heat] ... Fourier's great mathematical poem.

Fourier is a mathematical poem.

If we can't express what we know in the form of numbers, we really don't know much about it.