 Strauss published two other books and many essays in his later years. In 1958 he published what is likely his most controversial study, Thoughts on Machiavelli, in which he pronounced Machiavelli’s “anti-theological ire” the source of modernity. After retiring from Chicago, Strauss taught at Claremont Men’s College in California for a year and then joined his old friend Jacob Klein (1899–1978) at St. John’s College in Annapolis as a scholar in residence. Strauss died in 1973. The Argument and Action of Plato’s “Laws” was published posthumously in 1975. At the time of his death, Strauss had also been at work on studies of Nietzsche, Thucydides, and Xenophon. A number of important collections of Strauss’s essays have since been edited and published by some of his former students.