There cannot be a greater mistake than that of looking superciliously upon practical applications of science. The life and soul of science is its practical application.

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

To live among friends is the primary essential of happiness.

In science there is only physics; all the rest is stamp collecting.

It is conceivable that animal life might have the attribute of using the heat of surrounding matter, at its natural temperature, as a source of energy for mechanical effect . . . .The influence of animal or vegetable life on matter is infinitely beyond the range of any scientific enquiry hitherto entered on. Its power of directing the motions of moving particles, in the demonstrated daily miracle of our human free-will, and in the growth of generation after generation of plants from a single seed, are infinitely different from any possible result of the fortuitous concurrence of atoms.

I have no satisfaction in formulas unless I feel their numerical magnitude.

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.