Emile Durkheim explored how societies maintain order and cohesion, distinguishing sociology from psychology with the concept of social facts, which are external constraints that shape individual behavior. He categorized social facts into material and non-material types, and introduced key concepts like collective conscience and moral obligations that govern society. Durkheim's analysis of the division of labor and suicide led to a deeper understanding of social solidarity, illustrating the impact of social structures on individual actions and cultural norms.