Mario Rodríguez Cobos

Mario Luis Rodríguez Cobos (6 January 1938 – 16 September 2010), also known by the mononym Silo, was an Argentine writer and founder of the international volunteer organisation 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. Provided by Wikipedia