Native Chicagoan and original member of the Dominican friars of the Province of St. Albert the Great, Walter Farrell OP, STD, STM, (1902-1951) is historically recognized as a prominent moral theologian of his era. Fr. Farrell devoted much of his study and work to developing an understanding of theology for laypersons. This well-known Dominican is especially known for his remarkable “Companion to the Summa“, a four-volume masterpiece, published between 1938 and 1942. In this second volume, Fr. Farrell brings to life Summa Theologiae Ia & IIae using a narrative style and the popular language of his day. This timeless classic is still used throughout the world to teach the philosophy and theology of St. Thomas Aquinas.