My search-fu is failing me. I stumbled on this years ago and can't find it anywhere now. A very deep discussion about behavior in adults vs. children came up recently and I remembered reading about this bit of musing by a famous psychiatrist. I 'thought' it was Carl Jung, but the most I can find from him about the subject is the "Divine Child" (Peter Pan Syndrome) personality archetype and I seriously doubt that's what I was remembering. I also find nothing about him speculating on humanity's future. Does any of this ring a bell to anyone in or out of the field? Maybe I just credited it to the wrong person?