1. Durkheim believed that society can be studied scientifically and that social facts exist externally to individuals and influence their behavior.
2. He identified two types of social solidarity - mechanical based on similarity and organic based on differentiation and interdependence. Modern societies rely more on organic solidarity through an advanced division of labor.
3. Durkheim studied suicide rates to show how social integration and regulation influence behavior. He identified four types of suicide related to levels of integration and regulation in society.