This principle of beginning at the end or climax to write a poem or story was one so important that Poe insisted on it at great length. In the "Murders in the Rue Morgue" the author necessarily began at the end, imagined the solution of the mystery, and gradually worked back to the beginning, bringing in his detective after everything had been carefully constructed for him, though to the ordinary reader of the story it seems as if the detective came to a real mystery. It may be observed that all of Poe's stories and poems are built up about some principle of the mind. They illustrate how the mind works. After the principle is stated the illustration is given. Can anything be more important and interesting than to know how the mind thinks, how it is inspired with terror or love or a sense of beauty? If you know just how the mind of a man works in regard to these things, you can yourself create the conditions which will make others laugh or cry, be filled with horror, or overflow with a sense of divine holiness. Ordinary story-tellers and ordinary poets write poems or stories that are pretty and amusing; but it is only a master like Poe who writes to illustrate and explain some great principle. His stories teach us how we may go about producing similar effects in the affairs of life. We wish success in business, in society, in politics. To gain it we must make people think and feel as we think and feel. To do that we must understand the principles on which men's minds work, and no poet or writer analyzed and illustrated those principles so clearly as Poe. CHAPTER XII MUSIC AND POETRY Poe always maintained that music and poetry are very near of kin, and in nearly all his greatest poems he seems to write in such a way as to produce the impression of music. As you read his verses you seem to hear a musical accompaniment to the words, which runs through the very sounds of the words themselves. Poe explained that poetry and music are alike in that both obey absolute laws of time, and that the laws of time or rhythm in poetry are just as exact as the laws of time in music. He wrote an essay entitled "The Rationale of Verse," in which he demonstrated that all the rules for scanning poetry are defective. Every one knows that the ordinary rules for meter have numerous exceptions, but that if the rules were exact in the first place, there would be no exceptions. Perhaps you know something about musical notes. If so, a simple illustration will show you what "feet" in poetry are. You have perhaps been taught that a "foot" in verse is an accented syllable with one or more unaccented syllables, and you scan poetry by marking all the accented syllables. In Latin, poetry was scanned by marking long vowels and short. Let us scan the first two lines of "The Raven": "Ónce up | ón a mídnight | dréary, || whíle I | póndered | wéak and | wéary, Óver | mány a | quáint and | cúrious | vólume | óf for | gótten | lóre."