The provided text offers an extensive overview of the life and work of the French painter Gustave Courbet, focusing on his role as the leader of the Realism movement in 19th-century French painting. The source covers his biography, including his early artistic development and refusal of academic conventions, and details several of his notable works such as The Stone Breakers and A Burial at Ornans. Furthermore, it examines his political activities, particularly his controversial involvement with the Paris Commune, which led to his imprisonment and subsequent exile in Switzerland, where he died. Finally, the text explores his lasting legacy and influence on later artistic movements, including Cubism, and touches  ...