Task: Text Categorization
Input (English): The speaker of one work by this author observes the "little promontory" on which the titular creature stood. In one of his works, a boy is brought to tears by the "he-birds" calls for his lost mate, and repeatedly makes out the word "death" from the rustling of the ocean. The speaker of another of his poems declares that he sees the "clouds of the west" and the "flood tide below [him]" face to face, while the speaker of his most famous work states that "what [he] assumes, you shall assume" after proclaiming that he celebrates himself. For 10 points, name this American poet whose poems "Crossing Brooklyn Ferry" and "Song of Myself" appear in Leaves of Grass.
Output (English): Literature