1927. The letters of the great philosopher and theologian Spinoza, translated and edited with introduction and annotations by A. Wolf. Goethe says, "His correspondence is the most interesting book one can read in the world of uprightness and humanity." It presents a pageant of the leading types of 17th century mentality. It affords contemporary glimpses of important scientific researches and discoveries. The letters contain things of first-rate importance for the correct interpretation of the philosophy of Spinoza, and, above all, they help one to realize something of the greatness and strength of his character - one of the greatest in the whole history of mankind.