The philosopher Karl Raimund Popper (1902–1994) made important contributions to theories of knowledge and the philosophies of science and history. Among his most famous works is the two-volume The Open Society and its Enemies (1945). Born in Austria, Popper emigrated in 1935, teaching first at the University of Canterbury in Christchurch, New Zealand and then, from 1946, at the London School of Economics. He was knighted in 1965 for his life’s work.
Sir Karl Raimund Popper (1902–1994), black-and-white photograph, date unkbnown, photographer unknown; source: by kind permission of the collections of the LSE library, IMAGELIBRARY/5, Code: PA2329, http://archives.lse.ac.uk/record.aspx?src=CalmView.Catalog&id=IMAGELIBRARY%2f5.