His early philosophical writings rapidly earned him a reputation in the great world of London, to which at that time the eyes of all men--divines, wits, statesmen, philosophers, and poets--turned. It is not necessary here to dwell upon the nature of those philosophical writings, or to enter into any study of the great theory of idealism in which he affirmed that there is no proof of the existence of matter anywhere save in our own perceptions. Byron, in his light-hearted way, more than two generations later, dismissed Bishop Berkeley and his theory in the famous couplet-- {293} "When Bishop Berkeley said there is no matter, It clearly was no matter what he said" --a smart saying which Byron did not intend to put forth, and which nobody would be likely to regard, as a serious summing up of the mental work of Berkeley. Berkeley came to London in the first winter month of 1713, and made the acquaintance of his great countryman Swift. The Dean was a great patron of Berkeley's in those early London days. Swift took Berkeley to Court, and introduced him or spoke of him to all the great ministers, and pushed his fortunes by all the ways--and they were many--in his power. Berkeley, with the aid of Swift, was soon made free of that wonderful republic of letters which then held sway in London, and which numbered among its members such men as Steele and Addison, Bolingbroke and Harley, Gay and Arbuthnot, and Pope. Berkeley was in Addison's box at the first performance of "Cato," and tasted of the author's champagne and burgundy there, and listened with curious delight to the mingled applause and hisses that greeted Mr. Pope's prologue. A little later Berkeley went to Italy as the travelling tutor, the bear-leader, of the son of Ashe, Bishop of Clogher. In Italy he passed some four enchanted years.