Incluced are obvious selections from Summa Contra Gentiles and Summa Theologica (Five Ways of God's Existence and Essay on Law), but also included are excerpts from "De Regimine Principum."
There are hidden treasures in the back, excerpts from backgound sources and essays that influenced and were influenced by Thomisitic thought.
This book is geared towards a poltical scientist and poltical philosopher. For the theologian or the philosopher, however, I would reccomed Penguin Classics "Selected Writings."
PS--Nice picture on the cover!