爱伦坡是侦探小说(detective story)鼻祖、科幻小说(science fiction)先驱之一、恐怖小说(horror fiction)大师、短篇哥特小说巅峰、象征主义(symbolism)先驱之一，唯美主义(aestheticism)者。受到过爱伦·坡影响的主要人物有：柯南·道尔、波德莱尔、斯特芳·马拉美、儒勒·凡尔纳、罗伯特·路易斯·斯蒂文森、希区柯克、蒂姆·伯顿、江户川乱步等。爱伦·坡最著名的文艺理论是“效果论”。坡力图在自己的作品中先确立某种效果，再为追求这种效果而思考创作。他在《怪异故事集》序中称“自己的作品绝大部分都是深思熟虑的苦心经营”。

Hey, diddle diddle,The cat and the fiddle From an Epic by "Flaccus."

Since the world began there have been two Jeremys. The one wrote a Jeremiad about usury, and was called Jeremy Bentham. He has been much admired by Mr. John Neal, and was a great man in a small way. The other gave name to the most important of the Exact Sciences, and was entitled Jeremy Diddler. He was a great man in a great way — I may say, indeed, in the very greatest of ways.

Diddling — or the abstract idea conveyed by the verb to diddle — is sufficiently well understood. Yet the fact, the deed, the thing diddling, is somewhat difficult to define. We may get, however, at a tolerably distinct conception of the matter in hand, by defining — not the thing, diddling, in itself — but man, as an animal that diddles. Had Plato but hit upon this, he would have been spared the affront of the picked chicken.

Very pertinently it was demanded of Plato, why a picked chicken, which was clearly "a biped without feathers," was not, according to his own definition, a man? But I am not to be bothered by any similar query. Man is an animal that diddles, and there is no animal that diddles but man. It will take an entire hen-coop of picked chickeus [[chickens]] to get over that.

What constitutes the essence, the ware, the principle of diddling is, in fact, peculiar to the class of creatures that wear coats and pantaloons. A crow thieves; a fox cheats; a weasel outwits; a man diddles. To diddle is his destiny. "Man was made to mourn," says the poet. But not so: — he was made to diddle. This is his aim — his object — his end. And for this reason when a man’s diddled we say he’s "done."

Diddling, rightly considered, is a compound, of which the ingredients are minuteness, interest, perseverance, ingenuity, audacity, nonchalance, originality, impertinence, and grin.

Minuteness: — Your diddler is minute. His operations are upon a small scale. His business is retail, for cash, or approved paper at sight. Should he ever be tempted into magnificent speculation, he then, at once, loses his distinctive features, and becomes what we term "financier." This latter word conveys the diddling idea in every respect except that of magnitude. A diddler may thus be regarded as a banker in petto — a "financial operation," as a diddle at Brobdignag. The one is to the other as a Mastodon to a mouse — as the tail of a comet to that of a pig — as Homer to Flaccus — as the "Iliad" to "Sam Patch.".

Interest: — Your diddler is guided by self-interest. He scorns to diddle for the mere sake of the diddle. He has an object in view — his pocket — and yours. He regards always the main chance. He looks to Number One. You are Number Two, and must look to yourself.

Perseverance: — Your diddler perseveres. He is not readily discouraged. Should even the banks break, he cares nothing about it. He steadily pursues his end, and

Ut camis a corio nunquam absterrebitur uncto, so he never lets go of his game.