Mario Rodríguez Cobos, Argentinian philosopher and author (d. 2010)
Mario Luis Rodríguez Cobos, also known by the mononym Silo (6 January 1938 – 16 September 2010), was an Argentine writer and founder of the Humanist Movement.

An active speaker, he wrote books, short stories, articles and studies related to politics, society, psychology, spirituality and other topics. Although he described himself simply as a writer, many see him as a thinker and philosopher, based on the diversity of issues about which he has written.