It seems that Pope did not purchase the freehold of the house and grounds at Twickenham, but only a long lease. He took his father and mother along with him. His father died there the year after, but his mother continued to live till 1733, when she died at the great age of ninety-three. For twenty years she had the singular satisfaction of seeing her son the first poet of his age; carest by the greatest men of the time, courted by princes, and feared by all the base. No parents ever found a more tender and dutiful son. With him they shared in honor the ease and distinction he had acquired. They were the cherished objects of his home. Swift paid him no false compliment when he said, in condoling with him on his mother's death, "You are the most dutiful son I have ever known or heard of, which is a felicity not happening to one in a million." The property at Twickenham is properly described by Roscoe as lying on both sides of the highway, rendering it necessary for him to cross the road to arrive at the higher and more ornamental part of his gardens. In order to obviate this inconvenience, he had recourse to the expedient of excavating a passage under the road from one part of his grounds to the other, a fact to which he alludes in these lines: "Know all the toil the heavy world can heap, Rolls o'er my grotto, nor disturbs my sleep." The lower part of these grounds, in which his house stood, constituted, in fact, only the sloping bank of the river, by much the smaller portion of his territory. The passage, therefore, was very necessary to that far greater part, which was his wilderness, shrubbery, forest, and every thing, where he chiefly planted and worked. This passage he formed into a grotto, having a front of rude stonework opposite to the river and decorated within with spars, ores, and shells. Of this place he has himself left this description: