Film - the reasoning of the People's Artist of the USSR Andrei Alekseevich Popov on the stage of the Moscow Art Theater about the Italian scientist, astronomer, physicist Galileo Galilei. Part 1 City of Moscow. Actors of the Moscow Art Theater, participating in the play "The Life of Galileo", Alexei Alekseevich Borzunov, Anatoly Vladimirovich Semyonov, Vladimir Alexandrovich Peshkin, Nikolai Dmitrievich Kovshov on the stage of the theater. Actor, theater director and teacher, People's Artist of the RSFSR Andrei Alekseevich Popov, who plays the main role in the play "The Life of Galileo", speaks of the need to understand and follow the life of the Italian physicist, mathematician, astronomer Galileo Galilei, who with his experiments refuted the speculative metaphysics of Aristotle and laid the foundation classical mechanics (sync.). Part 2 City of Moscow. Actor, theater director and teacher, People's Artist of the RSFSR Andrei Alekseevich Popov discusses the character of the Italian scientist, astronomer, physicist Galileo Galilei (sinhr.). Animation: the movement of a pendulum, in the path of which a nail appears; transformation of the pendulum, the movement of the ball along inclined planes. Andrei Alekseevich Popov picks up a book and talks about the beginning of the process of the Inquisition; sits on the edge of the stage.