As members of the Dominican family we are rightly proud of the Angelic Doctor St. Thomas Aquinas. He was undoubtedly one of the brightest men to ever live and his works such as the Summa Theologiæ and the Catena Aurea are treasure troves of the best of Catholic thought about the nature of God, Man, virtue, the Scriptures, and more. Unlocking St. Thomas’ thought can be tough for the modern reader. There are many good resources out there and one that is easily available and an easy introduction to St. Thomas is Thomas Aquinas in 50 Pages by Taylor Marshall. From the introduction:
Why should you read a book about Thomas Aquinas?
This is the world’s most concise and easy to read book on the thought of Saint Thomas Aquinas. It’s only 50 pages, so be aware that it is not the most thorough treatment. A thorough treatment would be 5,000 pages, but you don’t have that much time. Nevertheless, if you read this short book and understand what it lays out, you will be in the top 0.001% of people in the world who have a working knowledge of the philosophy and theology of Saint Thomas Aquinas. You will have the knowledge to pass a class called “Thomas Aquinas 101,” and you will be ready to study Thomas Aquinas at the collegiate level. You will have the building blocks to move forward.
I’d highly recommend going to taylormarshall.com and signing up for his free email updates to get this book in pdf format.