Complex sentence: Curiously, it is one of his few tales that has human emotion as an important part of the story, and Lovecraft himself mentioned in a letter that of all his tales, it most closely resembles the style of his idol Edgar Allan Poe.
Split into simpler sentences: Curiously, it is one of Lovecraft's few tales that uses human emotion as an important part of the story. In a letter, Lovecraft himself said that, of all of his tales, the story most closely resembles the style of his idol Edgar Allan Poe.