"Many prefer not to exercise their imaginations at all. They choose to remain comfortably within the bounds of their own experience, never troubling to wonder how it would feel to have been born other than they are. They can refuse to hear screams or to peer inside cages; they can close their minds and hearts to any suffering that does not touch them personally; they can refuse to know. I might be tempted to envy people who can live that way, except that I do not think they have any fewer nightmares than I do. The wilfully unimaginative see more monsters. They are often more afraid."