Sir John William Dawson,
Facts and fancies in modern science
“ This is the balance of parts and forces within the organism itself. The organism is a complex machine; and if its parts have been put together by chance and are drifting onward in the path of evolution, there must of necessity be a continual struggle going on between [90] the different organs and functions, each tending to swallow up the others and each struggling for its own existence. This resolution of the body of each animal into a house divided against itself is at first sight so revolting to common sense and right feeling that few like to contemplate it. ”
