Manuel Castells is a Spanish sociologist and communication theorist, best known for his work on the impact of the internet and digital communication on society. He gained prominence with his trilogy, The Information Age, which explores how technology shapes social structures and relationships. Castells emphasizes the importance of networks in the modern world, highlighting how they influence politics, culture, and economics. Born on February 9, 1942, in Barcelona, Castells has held academic positions at various prestigious institutions, including the University of California, Berkeley. His research has significantly contributed to the fields of urban sociology, globalization, and social movements, making him a key figure in understanding contemporary social dynamics.