If you want to learn about nature, to appreciate nature, it is necessary to understand the language that she speaks in.

To those who do not know mathematics it is difficult to get across a real feeling as to the beauty, the deepest beauty, of nature. . . If you want to learn about nature, to appreciate nature, it is necessary to understand the language that she speaks in.

— Richard Phillips Feynman (American theoretical physicist, 1918-1988), in The Character of Physical Law (1967)