This new English translation of St. Thomas Aquinas's Treatise on Law, found in Questions 90-108 of the First Part of the Second Part of the Summa Theologiae, is the only free-standing English translation of the entire Treatise, which includes both a general account of law (Questions 90-92) and also specific treatments of what St. Thomas identifies as the five kinds of law: the eternal law (Question 93), the natural law (Question 94), human law (Questions 95-97), the Old Law (Questions 98-105), and the New Law (Questions 106-108).