If we are to use the words ‘childish’ and ‘infantile’ as terms of disapproval, we must make sure that they refer only to those characteristics of childhood which we become better and happier by outgrowing. Who in his sense would not keep, if he could, that tireless curiosity, that intensity of imagination, that facility of suspending disbelief, that unspoiled appetite, that readiness to wonder, to pity, and to admire?