Graham Wallas was a political theorist and psychologist. He was a member of School staff from 1895-1923, and was the School's first Professor of Political Science from 1914. Academically, he is remembered for his contribution to the  development of 'behavioural' political science and the psychology of politics. Politically, he was one of the inner circle of Fabians who moulded Fabian socialism. He joined the Fabian Society in April 1886, and contributed to the   Fabian Essays in Socialism of 1889. The Essays clearly express Fabian economic and political philosophy and they are still read today. Weakening commitment, time, and a growing disagreement between his own views and those of the Fabian led to Wallas' resignation from the Society in 1904. In 1914, he was one of a small number of intellectuals to protest against British involvement in the war. His works include Human Nature in Politics (1908), arguing that irrational forces like prejudice, custom, and accident are more likely to affect politics than rational calculation, and The Great Society (1914), in which he is concerned that the individual is at risk in a centralised modern industrial society. From 1894-1904 he was a London School Board member, and from 1904-07 he was a Progressive member of London County Council.