Cicero is increasingly recognised as a highly intelligent contributor to the ongoing ethical debates between Epicureans, Stoics and other schools. In this work on the fundamentals of ethics his learning as a scholar, his skill as a lawyer and his own passion for the truth result in a work which dazzles us in its presentation of the debates and at the same time exhibits the detachment of the ancient sceptic. Many kinds of reader will find themselves engaged with Cicero as well as with the ethical theories he presents. This collection takes the reader further into the debates, opening up new avenues for exploring this fascinating work.