The saddest thing about the trade of writing is that the writer can never know, nor hope to know, if he is a good workman. In literary criticism there are no criteria, no accepted standards of excellence by which to test the work. Sainte-Beuve says that the art of criticism consists in saying the first thing that comes into one’s head. Doubtless he was thinking of his own head, a fairly good one. There is a difference between the first thing that comes into one head and the first thing that comes into another; and it is not always the best kind of head that concerns itself with literary criticism. Having no standards, criticism is an erring guide. Its pronouncements are more interesting than valuable, and interesting chiefly from the insight that they give into the mind, not of the writer criticised, but of the writer criticising. Hence the greater interest that they have when delivered by one of whom the reader already knows something. So the newspapers are not altogether unwise when asking an eminent merchant to pass judgment on a new poet, or a distinguished soldier to “sit” in the case of a rising young novelist. We learn something about the merchant or the soldier, and that may amuse. As a guide to literary excellence even the most accomplished critic’s judgment on his contemporaries is of little value. Posterity more frequently reverses than affirms it. The reason is not far to seek. An author’s work is usually the product of his environment. He collaborates with his era; his co-workers are time and place. All his neighbors and all the conditions in which they live have a hand in the work. His own individuality, unless uncommonly powerful and original, is “subdued to what it works in.” But this is true, too, of his critic, whose limitations are drawn by the same iron authority. Subject to the same influences, good and bad, following the same literary fashions, the critic who is contemporary with his author holds his court in the market-place and polls a fortuitous jury. In diagnosing the disorder of a person suspected of hydrophobia the physician ought not to have been bitten by the same dog.