Thomas Aquinas is the most widely read and arguably most influential of the medieval philosophers. He is famous for his impressive and coherent synthesis of Greek Philosophy and Christian Theology and his magisterial Summa Theologiae is a hugely important, and enduring, text in the history of philosophy. Yet he is also a very difficult thinker and his ideas present a number of challenges to his readers. Aquinas: A Guide for the Perplexed is a clear and thorough account of Aquinas's thought, his major works and ideas, providing an ideal guide to the important and complex writings of this key thinker. The book introduces all the key concepts and themes in Aquinas's thought and examines the ways in which they have influenced philosophical and theological thought. Geared towards the specific requirements of students who need to reach a sound understanding of Aquinas's ideas, the book serves as a clear and concise introduction to his philosophy and natural theology. This is the ideal companion to the study of this most influential and challenging of thinkers.