In 1745, I received a letter from the Marquis of Annandale, inviting me to come and live with him in England; I found also, that the friends and family of that young nobleman were desirous of putting him under my care and direction, for the state of his mind and health required it. I lived with him a twelvemonth. My appointments during that time made a considerable accession to my small fortune. I then received an invitation from General St Clair to attend him as a secretary to his expedition, which was at first meant against Canada, but ended in an incursion on the coast of France. Next year, to wit, 1747, I received an invitation from the General to attend him in the same station in his military embassy to the courts of Vienna and Turin. I then wore the uniform of an officer, and was introduced at these courts as _aide-de-camp_ to the General, along with Sir Harry Erskine and Captain Grant, now General Grant. These two years were almost the only interruptions which my studies have received during the course of my life. I passed them agreeably, and in good company; and my appointments, with my frugality, had made me reach a fortune, which I called independent, though most of my friends were inclined to smile when I said so; in short, I was now master of near a thousand pounds. I had always entertained a notion, that my want of success in publishing the Treatise of Human Nature, had proceeded more from the manner than the matter, and that I had been guilty of a very usual indiscretion, in going to the press too early. I, therefore, cast the first part of that work anew in the Inquiry concerning Human Understanding, which was published while I was at Turin. But this piece was at first little more successful than the Treatise of Human Nature. On my return from Italy, I had the mortification to find all England in a ferment, on account of Dr Middleton's Free Inquiry, while my performance was entirely overlooked and neglected. A new edition, which had been published at London, of my Essays, Moral and Political, met not with a much better reception.