"The Sum of Theology" is a huge work of the outstanding thinker and theologian Thomas Aquinas, also known as Saint Thomas. This first part of "The Sum of Theology" is a real treasury of philosophical and theological knowledge of the Middle Ages. The author provides a systematic overview of the main issues of theology, considering the topics of faith, God, the creation of the world, man, sin and salvation. "The Sum of Theology" by Thomas Aquinas is a perfect example of the synthesis of philosophy and Christian dogmatics, which wittily explores the most complex problems of faith. This book is an integral part of cultural heritage and continues to fascinate and inspire readers around the world.