This work cites St. Jerome's interpretation of the
This work cites St. Jerome's interpretation of the four creatures in a cloud envisioned by Ezekiel to analyze the functional characteristics of men and eventually distinguish between synderesis and conscience.  In its second section, this work posits that fallen angels are still subject to God's designs because God fated them to fall from grace in order to test the faith of humans.  This work's final section expands St. Augustine's definition of the sacraments to characterize them as causing the grace they signify.  Thomas Aquinas appended a commentary on this work as the last part of the Summa Theologica, and this work arranges biblical texts in conjunction with quotations of Church Fathers and contemporary theologians in a comprehensive overview of medieval theology.  The standard theological textbook of the Middle Ages, FTP, name this four-book work by Peter Lombard.
This work cites St. Jerome's interpretation of the four creatures in a cloud envisioned by Ezekiel to analyze the functional characteristics of men and eventually distinguish between synderesis and conscience.  
Four Books of {Sentences}