to sign their name with a mark, and beside them men who master systems of shorthand and improvise new systems of their own as easily as they learnt the alphabet. These contrasts are to be seen on all hands, and have nothing to do with variations in general intelligence, nor even in the specialized intelligence proper to the faculty in question: for example, no composer or dramatic poet has ever pretended to be able to perform all the parts he writes for the singers, actors, and players who are his executants. One might as well expect Napoleon to be a fencer, or the Astronomer Royal to know how many beans make five any better than his bookkeeper. Even exceptional command of language does not imply the possession of ideas to express; Mezzofanti, the master of fifty-eight languages, had less to say in them than Shakespear with his little Latin and less Greek; and public life is the paradise of voluble windbags. All these examples, which might be multiplied by millions, are cases in which a long, laborious, conscious, detailed process of acquirement has been condensed into an instinctive and unconscious inborn one. Factors which formerly had to be considered one by one in succession are integrated into what seems a single simple factor. Chains of hardly soluble problems have coalesced in one problem which solves itself the moment it is raised. What is more, they have been pushed back (or forward, if you like) from post-natal to pre-natal ones. The child in the womb may take some time over them; but it is a miraculously shortened time.