"The Metropolis and Mental Life" is an essay by sociologist Georg Simmel that explores how urban environments affect individual psychology and social interactions. Simmel argues that living in a large city creates a unique mental state, characterized by a sense of anonymity and detachment. This urban experience can lead to both stimulation and alienation, as individuals navigate complex social networks. Simmel also discusses the impact of modernity on personal relationships, suggesting that city life fosters a more superficial engagement with others. He highlights how the fast-paced environment encourages people to adopt a more pragmatic approach to social interactions, often prioritizing efficiency over emotional connections.