In this excellent work, Fr. Serge-Thomas Bonino, OP endeavors to present St. Thomas's teaching on angelology to contemporary people. His book is divided into four parts. In the first part, he discusses the data of tradition: what the Old Testament teaches, what intertestamental Judaism teaches, what the New Testament teaches, and what the Fathers of the Church teach.
In the remaining parts, he gets into the Thomistic synthesis. He first explores the nature of the angels: what are angels? Do they have bodies? Do they have "spiritual matter"? How and what do angels know? How and what do angels love? Following this, he enters into a discussion of the angels as beings with a supernatural vocation. Like us, angels are created by God. Also like us, angels have a natural end but also a supernatural vocation: the beatific vision. Because of this, they were offered a choice. Some chose God and became glorified. Others chose themselves and became demons. Finally, he discusses the place of angels in the divine government: specifically, their relationship to the Incarnate Lord, their interrelationships, their guardianship of men, and the temptations of the demons.
In this fantastic exposition, Father touches not only on Thomistic angelology (which cannot be set off from the rest of the Thomistic synthesis) but providence, creation, man, the distinction between nature and grace, the nature of free will, the nature of the intellect and the will, moral theology, the Incarnation, and the last things. This is a wonderful work and it is not only highly recommended, but essential to anyone who studies the theology of St. Thomas, and even to Catholics in general.