Political and social events must also be effective, but not in a very obvious fashion. But political confusion and prolonged peace undoubtedly affect creative thought but whether they respectively hinder or help it is not at all certain.

Political activism
Arriving in Cambridge as a Catholic Bernal became a socialist as a result of a long night arguing with a friend. (1965). 0143.

John Desmond Bernal[pronunciation?]FRS (10 May 1901 – 15 September 1971) was one of the United Kingdom's most well-known and controversial scientists.