"On the Improvement of Understanding" is a philosophical work of the outstanding Dutch philosopher Benedict de Spinoza. In this book, the author examines the question of the structure of the mind and ways to improve it. Spinoza explores the nature and essence of the human mind, offers methods and techniques for achieving clearer and correct thinking. The book is an important philosophical work that helps readers develop their thinking, increase their ability to analyze and understand, and deepen their knowledge of the philosophy of man and his place in the universe.