John Locke

“ I think it will be needless to enumerate all the particular simple ideas belonging to each sense. Nor indeed is it possible if we would ; there being a great many more of them belonging to most of the senses than we have names for. The variety of smells, which are as many almost, if not more, than species of bodies in the world, do most of them want names. Sweet and stinking commonly serve our turn for these ideas, which in effect is little more than to call them pleasing or displeasing ; though the smell of a rose and violet, both sweet, are certainly very distinct ideas. ”

“ And if these organs, or the nerves which are the conduits to convey them from without to their audience in the brain, – the mind’s presence-room (as I may so call it) – are any of them so disordered as not to perform their functions, they have no postern to be admitted by ; no other way to bring themselves into view, and be perceived by the understanding. ”