Stand near me and you get sick. Why? It reminds you that you're an animal too, because you get a full dose of me. So we go round and round in our endless feedback. You hate me because you learn things about your own soul by getting near me. And I hate you because you must draw back from me. What I am, you see, is a plague carrier, and the plague I carry is the truth. My message is that it's a lucky thing for humanity that we're shut up each in his own skull. Because if we had even a little drop of telepathy, even the blurry nonverbal thing I've got, we'd be unable to stand each other. Human society would be impossible.

Chapter 8 (p. 120) - The Man in the Maze (1969)