Jefferson wrote to Adams on June 27, 1813:
the summum bonum with me is now truly Epicurean, ease of body and tranquility of mind; and to these I wish to consign my remaining days.
He did a lot of Epicurean pursuits in his older age, but he did not completely retire from public life. He had a major hand in directing the development of the University of Virginia toward the end of his life.