Young men and women beginning to write are generally given the plausible but utterly impracticable advice to write what they have to write as shortly as possible, as clearly as possible, and without other thought in their minds except to say exactly what is in them. Nobody ever adds on these occasions the one thing needful: "And be sure you choose your patron wisely", though that is the gist of the whole matter. For a book is always written for somebody to read, and, since the patron is not merely the paymaster, but also in a very subtle and insidious way the instigator and inspirer of what is written, it is of the utmost importance that he should be a desirable man.