I had now also begun to converse, on general subjects, with the instructed men with whom I came in contact: and the opportunities of such contact naturally became more numerous. The two friends of my father from whom I derived most, and with whom I most associated, were Mr. Grote and Mr. John Austin. The acquaintance of both with my father was recent, but had ripened rapidly into intimacy. Mr. Grote was introduced to my father by Mr. Ricardo, I think in 1819, (being then about twenty-five years old), and sought assiduously his society and conversation. Already a highly instructed man, he was yet, by the side of my father, a tyro on the great subjects of human opinion; but he rapidly seized on my father’s best ideas; and in the department of political opinion he made himself known as early as 1820, by a pamphlet in defence of Radical Reform, in reply to a celebrated article by Sir James Mackintosh, then lately published in the Edinburgh Review. Mr. Grote’s father, the banker, was, I believe, a thorough Tory, and his mother intensely Evangelical; so that for his liberal opinions he was in no way indebted to home influences. But, unlike most persons who have the prospect of being rich by inheritance, he had, though actively engaged in the business of banking, devoted a great portion of time to philosophic studies; and his intimacy with my father did much to decide the character of the next stage in his mental progress. Him I often visited, and my conversations with him on political, moral, and philosophical subjects gave me, in addition to much valuable instruction, all the pleasure and benefit of sympathetic communion with a man of the high intellectual and moral eminence which his life and writings have since manifested to the world.

Note from KBJ: Grote was 11½ years Mill’s senior. In 1819, when Grote met Mill’s father, Grote was 25 and young John a mere 13.