Arnold J. Toynbee: Der Gang der Weltgeschichte/ Band 2, Kulturen im Übergang, 2. Aufl. München: dtv, 1979, S. 430
Original engl.: “Social life is impossible without some meaning of both personal liberty and social justice. Personal liberty is an indispensable condition for any human achievement, good or evil, while social justice is the sovereign rule of the game of human intercourse.” - A Study of History, Vol. 2, p.340 books.google https://books.google.de/books?id=aRmTMxO61m4C&pg=PA340
