The book was written by an outstanding Soviet historian of philosophy. It is based on numerous studies by the author, which have been highly praised in the world historical and philosophical literature. The author paints a broad picture of the evolution of logical teachings. The first part of the work gives an outline of the logical teachings of the East and Europe up to and including the early Middle Ages. The second part examines the logical theories of the era of feudal society, the third part examines the logical concepts of the New Age (Descartes, Pascal, Port-Royal logic, Spinoza, Bacon, Hobbes, Locke, Leibniz, French materialists of the 18th century, Russian logicians of the 18th century . etc.).