Paul Donald MacLean (May 1, 1913 – December 26, 2007) was an American physician and neuroscientist who made significant contributions in the fields of physiology, psychiatry, and brain research through his work at Yale Medical School and the National Institute of Mental Health. MacLean's evolutionary triune brain theory proposed that the human brain was in reality three brains in one: the reptilian complex, the limbic system, and the neocortex.
Prof Hyman Levy (28 February 1889 – 27 February 1975) was a Scottish-Jewish philosopher, Emeritus Professor of Imperial College London, mathematician, political activist and fellow of the Royal Society of Edinburgh.
Hugh Robert Mill (28 May 1861 – 5 April 1950) was a British geographer and meteorologist who was influential in the reform of geography teaching, and in the development of meteorology as a science. He was President of the Royal Meteorological Society for 1907/8, and President of the Geographical Association in 1932.