The writer must believe that what he is doing is the most important thing in the world. And he must hold to this illusion even when he knows it is not true.

爱护别人的人，别人也必定爱护他；有利于别人的人，别人也必定有利于他；憎恶别人的人，别人也必定憎恶他；伤害别人的人，别人也必定伤害他。