Among the Eton tutors was one whose name will always be revered by Shelley's worshippers; for he alone discerned the rare gifts of the strange and solitary boy, and Shelley loved him. Dr. Lind was an old man, a physician, and a student of chemistry. Shelley spent long hours at his house, conversing with him, and receiving such instruction in philosophy and science as the grey-haired scholar could impart. The affection which united them must have been of no common strength or quality; for when Shelley lay ill of a fever at Field Place, and had conceived the probably ill-founded notion that his father intended to place him in a mad-house, he managed to convey a message to his friend at Eton, on the receipt of which Dr. Lind travelled to Horsham, and by his sympathy and skill restored the sick boy's confidence. It may incidentally be pointed out that this story, credited as true by Lady Shelley in her Memorials, shows how early an estrangement had begun between the poet and his father. We look, moreover, vainly for that mother's influence which might have been so beneficial to the boy in whom "love and life were twins, born at one birth." From Dr. Lind Shelley not only received encouragement to pursue his chemical studies; but he also acquired the habit of corresponding with persons unknown to him, whose opinions he might be anxious to discover or dispute. This habit, as we shall see in the sequel, determined Shelley's fate on two important occasions of his life. In return for the help extended to him at Eton, Shelley conferred undying fame on Dr. Lind; the characters of Zonaras in "Prince Athanase," and of the hermit in "Laon and Cythna," are portraits painted by the poet of his boyhood's friend.