“I can think of another reason... for why thoughts make us sad. We may feel we know too much, or come to know it too early, which is the guilty burden of precocity. Children play to the expectations adults have of them, to behave in a childlike manner, but inside, they may not regard themselves as innocent so much as confused. I grew up sensing that a part of me was faking being a child; I felt I was already an old soul. Lots of people feel that, particularly those who will go on to become writers.”