Max Weber was a German sociologist who developed influential theories of social action and stratification. According to Weber's theory of social action, social behavior is guided by subjective meanings and orientations. He identified four types of social action - rational, value-rational, affective, and traditional. Weber also developed a three-component theory of stratification that classified people based on class, status, and power. Weber argued that Protestantism and the Protestant work ethic influenced the emergence of capitalism's rational spirit. He analyzed how religious beliefs shaped entrepreneurship and economic behavior.