Abstract
By decision of the World Council of Peace, progressive mankind marked, on October 5, 1963, the 250th anniversary of the birth of an outstanding representative of the French Enlightenment, Denis Diderot. Diderot occupies an honored place in the history of world thought on esthetics, as one of the greatest theoreticians of realist art. The esthetic theory founded by Diderot, calling for the representation of nature, was directed against the feudal, theological world view and against the aristocratic art of the court. Diderot's esthetics, like his philosophy, served the cause of ideological preparation for the bourgeois revolution at the end of the 18th century in France. "Each age has its distinctive spirit," said Diderot. "The spirit of our age is the spirit of freedom."