Page:The Craftsmanship of Writing.djvu/20

 practically only three in number: the market value of his ware; his own self-criticism, and the opinions of others. Now it is a common experience among young authors to find through weary months that their wares apparently have no market value at all—this does away with the first source of knowledge. Secondly, the ability to criticise one's self in a detached, impartial way is one of the rarest of human faculties—and not a bit less rare in authors than in other people. Yet, unfortunately, it is upon his own judgment that every young writer must very largely depend. For there is probably no other craft or employment in which it is so difficult to obtain a really authoritative opinion—for the excellent reason that in no other craft or employment is there such a lack of any general requirement, any standard of apprenticeship. Indeed, it is often as hard to guess the potential powers