Science

It is an extraordinary fact that man in himself, so far as he avails himself of his sound mind, is the greatest and most precise physical apparatus that can be. And it is in fact the greatest evil of the newer physics that experiments are, as it were, separated from man himself, so that nature is recognised only in what is ascertained by artificial instruments. It is exactly so with calculation. Much is true which cannot be computed, just as much can never be experimentally demonstrated.

Man, however, stands so high that that which otherwise admits of no representation is represented in him. What, then, is a string and all its mechanical division compared with the ear of the musician? Indeed, it may be said what are the elementary phenomena of nature compared with man, who must first master and modify them all in order to assimilate them to himself?