The psychology of a complex mind must differ almost as much from that of a simple, mechanized mind as its psychology would from ours; because something that must underlie and perhaps be even greater than sex is involved.

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.