The librarian was explaining the benefits of the Dewey decimal system to her junior--benefits that extended to every area of life. It was orderly, like the universe. It had logic. It was dependable. Using it allowed a kind of moral uplift, as one's own chaos was also brought under control. 'Whenever I am troubled,' said the librarian, 'I think about the Dewey decimal system.' 'Then what happens?' asked the junior, rather overawed. 'Then I understand that trouble is just something that has been filed in the wrong place. That is what Jung was explaining of course--as the chaos of our unconscious contents strive to find their rightful place in the index of consciousness.