The philosophy of state socialism was first explicitly expounded by Ferdinand Lassalle. These have been further expounded by commentaries of various Torah scholars during the ages. This view was expounded on by medieval theologians such as Thomas Aquinas and John Wycliffe. Breyer expounded his judicial philosophy in 2005 in "Active Liberty&colon; Interpreting Our Democratic Constitution". Learning by doing refers to a theory of education expounded by American philosopher John Dewey. Contemporary with Catullus, Lucretius expounded the Epicurean philosophy in a long poem, "De rerum natura". With extraordinary zeal, he expounded his system of "transcendental idealism". In the Sermon on the Mount, Jesus expounded upon the Ten Commandments. In this latter work he expounded a scientific theory of Catastrophism. This argument is famously expounded in the "Anattalakkhana Sutta". In its columns he tirelessly expounded his views upon the subject. This argument was expounded upon by David Hume. However, as Schaffer explains, no convincing synthesis of his work has yet been expounded. Preterism was first expounded by the Jesuit Luis de Alcasar during the Counter Reformation. Riess expounded upon this hypothesis in a series of articles.