Aquinas is one of those figures who I know that I should know something about, but his writings are (far too) long and complicated. This book provides an excellent and serious introduction to Aquinas's thought--and one that is also very funny. The book covers topics like Aquinas' views on God, abortion, sex, and war, and it shows how Aquinas shaped our current attitudes. I have similar introductions to Aquinas by Copleston and Chesterton; the Renick volume is by far the most accessible of the three and the one from which I learned the most. It should be required reading.