The book is a brief summary of one of the most ancient sciences - Aristotle's logic. It is completed with test tasks, a collection of entertaining logic problems and a short glossary of terms. The author, a candidate of philosophical sciences, associate professor at Moscow Pedagogical State University, uses the book’s materials with constant success in many years of teaching practice. The book is addressed to high school students of general education institutions (schools with in-depth study of social and humanitarian subjects, gymnasiums and lyceums). She will be able to help students of higher education institutions make the study of logic interesting and exciting. The book will be useful to everyone interested in logic and other humanities.