The detective story (perhaps I had better call it that, since the English formula still dominates the trade) has to find its public by a slow process of distillation. That it does do this, and holds on thereafter with such tenacity, is a fact; the reasons for it are a study for more patient minds than mine. Nor is it any part of my thesis to maintain that it is a vital and significant form of art. There are no vital and significant forms of art; there is only art, and precious little of that. The growth of populations has in no way increased the amount; it has merely increased the adeptness with which substitutes can be produced and packaged.

Yet the detective story, even in its most conventional form, is difficult to write well. Good specimens of the art are much rarer than good serious novels. Rather second-rate items outlast most of the high velocity fiction, and a great many that should never have been born simply refuse to die at all. They are as durable as the statues in public parks and just about that dull. This is very annoying to people of what is called discernment. They do not like it that penetrating and important works of fiction of a few years back stand on their special shelf in the library marked "Best-Sellers of Yesteryear," and nobody goes near them but an occasional shortsighted customer who bends down, peers briefly and hurries away; while old ladies jostle each other at the mystery shelf to grab off some item of the same vintage with a title like The Triple Petunia Murder Case, or Inspector Pinchbottle to the Rescue. They do not like it that "really important books" get dusty on the reprint counter, while Death Wears Yellow Garters is put out in editions of fifty or one hundred thousand copies on the news-stands of the country, and is obviously not there just to say goodbye.

To tell you the truth, I do not like it very much myself. In my less stilted moments I too write detective stories, and all this immortality makes just a little too much competition. Even Einstein couldn’t get very far if three hundred treatises of the higher physics were published every year, and several thousand others in some form or other were hanging around in excellent condition, and being read too. Hemingway says somewhere that the good writer competes only with the dead. The good detective story writer (there must after all be a few) competes not only with all the unburied dead but with all the hosts of the living as well. And on almost equal terms; for it is one of the qualities of this kind of writing that the thing that makes people read it never goes out of style. The hero’s tie may be a little off the mode and the good gray inspector may arrive in a dogcart instead of a streamlined sedan with siren screaming, but what he does when he gets there is the same old futzing around with timetables and bits of charred paper and who trampled the jolly old flowering arbutus under the library window.

It just keeps getting better.