Neil Gaiman said this quote
“ I'm going to tell you something important. Grown-ups don't look like grown-ups on the inside either. Outside, they're big and thoughtless and they always know what they're doing. Inside, they look just like they always have. Like they did when they were your age. The truth is, there aren't any grown-ups. Not one, in the whole wide world. ... I wonderes if that was true: if they were all really children wrapped in adult bodies, like children's books hidden in the middle of dull, long adult books, the kind with no pictures or conversations. ”