Science is bound, by the everlasting vow of honour, to face fearlessly every problem which can be fairly presented to it.

If you can not measure it, you can not improve it.

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.

The fact that mathematics does such a good job of describing the Universe is a mystery that we don't understand. And a debt that we will probably never be able to repay.

Science is bound, by the everlasting vow of honour, to face fearlessly every problem which can be fairly presented to it.

Quaternions came from Hamilton after his really good work had been done, and though beautifully ingenious, have been an unmixed evil to those who have touched them in any way.

Fourier is a mathematical poem.