Michel Tournier said this quote

“ One understands then why woman has no sexual parts, properly speaking. It is because she is herself a sexual part - a sexual part of man, to cumbersome for him to carry around permanently and therefore deposited outside himself for most of the time and taken up when needed. Moreover the quality that distinguishes man from animals is this very power of equipping himself at any moment with an instrument, tool or arm that he needs, but that he can get rid of straight away, whereas the lobster has to drag his two pincers about with him everywhere. And just as mans hand is a sort of grappling hook that enables him to grasp a hammer, sword or fountain pen according to his needs, so his sex is the sort of grappling hook of the sexual parts rather than the sexual part itslef. ”