Listeners will get acquainted with one of Aristotle's key texts and learn how the philosopher reasons about the fundamental principles of all that exists. Why does what exists exist? Is there a first cause and purpose for things? Aristotle addresses these questions in his work "Metaphysics." The lecture leader will explain how Aristotle described the causes and beginnings of existence, and his attempt to describe reality. A separate part of the conversation will be dedicated to the contradictions in Aristotle's doctrine. It is important to read the work in advance: this will allow for an immediate transition to discussing arguments, concepts, and complex parts of the text. This lecture is for those interested in philosophy and the humanities, as well as for readers who want to learn how to work with complex primary sources. Even if the experience of reading ancient philosophy is still small, the discussion will help build guidelines and connect individual positions into a clear system. The leader is Konstantin Kazachenko - a philosophy teacher and a graduate of the philosophy faculty of RGGU. Where to go in Moscow today will be told by our website.