Treatise by the famous Neoplatonist of the 5th century. AD For a long time, Proclus of Lycia’s Elements of Physics did not attract the attention it deserves. Despite the fact that the treatise is a brief summary of Aristotle's doctrine of motion, its genre seems very unusual for antiquity. No one except Proclus tried to present the physical doctrine of the Peripatetics in the form of a system of theorems accompanied by proofs. The only work to which the “Elements of Physics” could be compared is the famous “Elements” of Euclid. The treatise consists of two parts and includes a total of 52 theorems. Each part opens with a list of statements accepted without proof. Proclus collected and organized in his treatise everything that can be stated with mathematical precision in books VI and VIII of Aristotle's Physics and book I of his treatise On Heaven.