The book "Statistical Mechanics" by Giovanni Gallavotti offers a comprehensive and critical analysis of the conceptual foundations of statistical mechanics as outlined in the works of Boltzmann. It places particular emphasis on the relationship between microscopic reversibility and macroscopic irreversibility. Students will find in this work a clear and detailed explanation of fundamental concepts such as the equipartition theorem, entropy, and ergodicity. Additionally, topics such as Brownian motion, the modern treatment of the thermodynamic limit, phase transitions, as well as the microscopic and macroscopic theory of phase coherence are discussed. The book also sheds light on the statistical mechanics of stationary states, as well as fluctuations and dissipation in chaotic motions.