Émile Durkheim, a founding figure in sociology, argued in 'Suicide: A Study in Sociology' that suicide is a social phenomenon influenced by various social factors, categorizing it into four types: egoistic, altruistic, anomic, and fatalistic. His research utilized official statistics, interviews, and text analysis to understand these social influences and established the significance of social integration in suicide rates. Durkheim's theories continue to inform contemporary studies and prevention strategies related to suicide.