"Monadology" by Gottfried Wilhelm Leibniz is a fundamental treatise that reflects his philosophical system. In this work, Leibniz introduces the concept of monads - self-contained, immaterial, self-sufficient individuals, which are the main components of the universe. The book is devoted to solving the question about the nature of reality, about the combination of spirit and matter, about the structure of the universe. This edition of the Monadology includes a study and commentary by Clodius Pythia, which help to further understand and analyze the ideas presented in Leibniz's work. The author examines key concepts in detail, provides important additions to the text and provides the reader with an opportunity to better understand the essence of "Monadology". "Monadology with Commentary and Study by Clodius Fifth" is not only an important philosophical work, but also an additional key to understanding the complex and profound ideas of Gottfried Wilhelm Leibniz.