"Discussion on method, to rightly direct one's mind and seek truth in the sciences" — the most famous work of René Descartes, in which he formulates the rational method of scientific knowledge. Descartes invites the reader to become acquainted with the way of reasoning that allowed him to penetrate the essence of things and phenomena and arrive at reliable conclusions. The collection also includes: "The Search for Truth through Natural Light", "Meditations on First Philosophy, in which the existence of God and the distinction between the human soul and body are proved", "Principles of Philosophy".