Religion is a social institution involving beliefs and practices based on conceptions of the sacred and profane. It involves rituals and ceremonial behavior but cannot be scientifically validated since it relies on faith rather than evidence. Sociology can study religion's social consequences. Durkheim viewed religion as society's symbolic power over individuals, maintaining social cohesion, control, and meaning. Marx noted religion legitimizes inequality and the status quo. Weber's Protestant ethic thesis showed how religion can promote social change like capitalism. Religions differ in their integration into society from churches to sects to cults.