I have just reached a scene in Infinite Jest where 17-year-old Hal Incandenza reflects, in conversation with his deformed brother Mario, about the monsters he once feared and what he fears now:
'Boo, I think I no longer believe in monsters as faces in the floor or feral infants or vampires or whatever. I think at seventeen now I believe the only real monsters might be the type of liar where there's simply no well to tell. The ones who give nothing away.'
'But then how do you know they're monsters then, then?'