A radical freethinker, Spinoza is one of the fathers of the European Enlightenment. He created an unusually deep and harmonious philosophical teaching, laid the foundation for scientific criticism of the Bible and, most importantly, managed to live his life in harmony with his theory. Spinoza's Ethics is not only an undeniable masterpiece of philosophical thought, but also one of the most difficult works to understand. The heated controversy surrounding this book has lasted for centuries. The nature of the world and man, the structure of the mind and the method of knowing the truth, our freedom and the meaning of life - these are the main themes of Spinoza's thoughts presented in this edition. The texts are provided with detailed comments and explanations by Andrey Maidansky.