The Book of the Sentences
The work of the theologian, Peter Lombard.
He wrote the four , 1145 to 1151, and is called the Master of the Sentences, or the Master.
The first book treats of God and the Trinity, Providence, predestination, and evil; the second, or creation, the angels, the fall, grace, and sin; the third, of the Incarnation, Redemption, the virtues, and commandments; the fourth, of the Sacraments and the four last things.
He combined the two tendencies of the period, speculation and authority, and owed much to other authors.
The work was the standard textbook on theology down to the 16th century, and greatly influenced the work of Saint Thomas Aquinas.
New Catholic Dictionary