Kurt Lewin (1890–1947) German-American psychologist
Source: 1940s, Action research and minority problems, 1946, p. 36.
Source: 1970s, Organizational Analysis: A Sociological View, 1970, p. 10
Kurt Lewin (1890–1947) German-American psychologist
Source: 1940s, Action research and minority problems, 1946, p. 36.
Milton Friedman (1912–2006) American economist, statistician, and writer
“Interview with Milton Friedman”, Playboy magazine (Feb. 1973)
Allen Newell (1927–1992) American cognitive scientist
Source: Computer Science as Empirical Inquiry: Symbols and Search (1975), p. 120.
Mark Kingwell (1963) Canadian philosopher
Source: The World We Want (2000), Chapter 4, Spaces And Dreams, p. 171
Ed Gillespie (1961) American political strategist
Interview With Virginia Republican Gubernatorial Candidate Ed Gillespie http://www.dailywire.com/news/22601/exclusive-interview-virginia-republican-tyler-dahnke# (October 23, 2017)
Karl Popper (1902–1994) Austrian-British philosopher of science
Colin Powell in My American Journey (1995)
Misattributed
Douglas McGregor (1906–1964) American professor
Source: The Human Side of Enterprise (1960), p. 47