Mrs. Orr (_Handbook of Browning's Works_, p. 274) says of this poem: "We can connect no idea of definite pursuit or attainment with a series of facts so dream-like and so disjointed: still less extract from it a definite moral; and we are reduced to taking the poem as a simple work of fancy, built up of picturesque impressions which have, separately or collectively, produced themselves in the author's mind." And she adds in a note: "I may venture to state that these picturesque materials included a tower which Mr. Browning once saw in the Carrara Mountains, a painting which caught his eye years later in Paris; and the figure of a horse in the tapestry in his own drawing-room--welded together in the remembrance of the line from '_King Lear_,' which forms the heading of the poem." The possible allegorical signification of the poem has been the subject of much, and often of singularly futile discussion. Dr. Furnivall said he had asked Browning if it was an allegory, and in answer had on three separate occasions received an emphatic statement that it was simply a dramatic creation called forth by a line of Shakspere's. (Porter-Clarke, _Study Programmes_, p. 406.) Yet allegorical interpretations continue to be made. According to one line of interpretation the pilgrim is a "truth-seeker, misdirected by the lying spirit" (the hoary cripple), and when he blows the slug-horn it is as a warning to others that he has failed in his quest, and that the way to the dark tower is the way of destruction and death. (Berdoe, _Browning Cyclopaedia_, p. 105) According to other readings of the tale the blast which the pilgrim blows at the end of his quest is one of "spiritual victory and incitement to others." When the Rev. John S. Chadwick visited the poet and asked him if constancy to an ideal--"He that endureth to the end shall be saved"--was not a sufficient understanding of the central purpose of the poem, Browning said: "Yes, just about that." With constancy to an ideal as the central purpose, the details of this poem, without being minutely interpreted, may yet serve as a representation of the depression, the hopelessness, the dullness and deadness of soul, the doubt and terror even of the man who travels the last stages of a difficult journey to a long-sought but unknown goal. His victory consists in the unfaltering persistence of his search. The "squat tower," when he reaches it, is prosaic and ugly, but finding it is after all not the essential point. The essential element of his success is that, encircled by the last temptations to despair, he holds heart and brain steady, and carries out his quest to its last detail. (See an article in _The Critic_, May 3, 1886, by Mr. Arlo Bates, in opposition to any definite allegory. Mr. Nettleship in _Robert Browning_ [p. 89] devotes a chapter to a paraphrase and an allegorical explanation.)