He suspected that the authoress in describing both Scheria and Ithaca was drawing from her native country and searched on the Admiralty charts for the features enumerated in the poem; this led him to the conclusion that the country could only be Trapani, Mount Eryx, and the AEgadean Islands. As soon as he could after this discovery he went to Sicily to study the locality and found it in all respects suitable for his theory; indeed, it was astonishing how things kept turning up to support his view. It is all in his book The Authoress of the Odyssey, published in 1897 and dedicated to his friend Cavaliere Biagio Ingroja of Calatafimi.
His first visit to Sicily was in 1892, in August—a hot time of the year, but it was his custom to go abroad in the autumn. He returned to Sicily every year (except one), but latterly went in the spring. He made many friends all over the island, and after his death the people of Calatafimi called a street by his name, the Via Samuel Butler, “thus,” as Ingroja wrote when he announced the event to me, “honouring a great man’s memory, handing down his name to posterity, and doing homage to the friendly English nation.” Besides showing that the Odyssey was written by a woman in Sicily and translating the poem into English prose, he also translated the Iliad, and, in March, 1895, went to Greece and the Troad to see the country therein described, where he found nothing to cause him to disagree with the received theories.
It has been said of him in a general way that the fact of an opinion being commonly held was enough to make him profess the opposite. It was enough to make him examine the opinion for himself, when it affected any of the many subjects which interested him, and if, after giving it his best attention, he found it did not hold water, then no weight of authority could make him say that it did. This matter of the geography of the Iliad is only one among many commonly received opinions which he examined for himself and found no reason to dispute; on these he considered it unnecessary to write.
It is characteristic of his passion for doing things thoroughly that he learnt nearly the whole of the Odyssey and the Iliad by heart. He had a Pickering copy of each poem, which he carried in his pocket and referred to in railway trains, both in England and Italy, when saying the poems over to himself. These two little books are now in the library of St. John’s College, Cambridge. He was, however, disappointed to find that he could not retain more than a book or two at a time and that, on learning more, he forgot what he had learnt first; but he was about sixty at the time. Shakespeare’s Sonnets, on which he published a book in 1899, gave him less trouble in this respect; he knew them all by heart, and also their order, and one consequence of this was that he wrote some sonnets in the Shakespearian form. He found this intimate knowledge of the poet’s work more useful for his purpose than reading commentaries by those who were less familiar with it. “A commentary on a poem,” he would say, “may be useful as material on which to form an estimate of the commentator, but the poem itself is the most important document you can consult, and it is impossible to know it too intimately if you want to form an opinion about it and its author.”