Galileo Ranks alongside Mother Courage and Mr. Puntila as one of Brechtâ"s most intensely alive, human, and complex characters. In Life of Galileo, the great Renaissance scientist is in a brutal struggle for freedom from authoritarian dogma. Unable to satisfy his appetite for scientific investigation, he comes into conflict with the Inquisition and must publicly renounce his theories, though in private he goes on working on his revolutionary ideas.