Mathematical psychologist who contributed to the study of gas theory, social networks, and semantics. He co-founded Science for Peace, an organization of Canadian scientists working to promote peace.
He immigrated to American from Russia in 1922 when he was 11 but later studied conducting and composition at the Vienna Hochschule für Musik, before leaving to go back to America because of the rise of Nazism.
He published his first book, Science and the Goals of Man, in 1950 and in 1970, disappointed with America's Vietnam policy, he moved to Toronto.
He had three children with his wife Gwen.
He is a well known 20th century Russian scientist like Guy Severin.