According to this model, human beings are, at least in one aspect, sensation-receiving machines; and although our receptory apparatus is competent to select and organize outward stimuli within the narrow range necessary for physical survival within our environment, it does not necessarily tell us very much about the nature of that environment. People, in other words, have little access to the possible world existing beyond their sensations.

Because that's what it is, boy, it's a fight, or it'd better be. Because if there's something in me that's trying to kill me, maybe I can't get rid of it, but I don't have to make it welcome, and I'm sure not going to pretend it ain't there.