“A book should try to accomplish something more than just to repeat a child’s own experiences. One would hope rather to make a child laugh or feel clear and happy-headed as he follows a simple rhythm to its logical end, to jog him with the unexpected and comfort him with the familiar; and perhaps to lift him for a few moments from his own problems of shoe laces that won’t tie and busy parents and mysterious clock time into the world of a bug or a bear or a bee or a boy living in the timeless world of story.”