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The Political Thought of William of Ockham: Personal and Institutional Principles . By Arthur Stephen McGrade. (New York: Cambridge University Press, 1974. Pp. xiii + 269. $18.50.)

These convictions are best exemplified when he uses the mixed Yugoslav system of central bureaucracy and organizational selfmanagement to illustrate the future possibilities and present deficiencies of a post-capitalist and post-bureaucratic society. Yugoslavia is not Paradise regained, but discussed as one concrete historical possibility among others. "All possibilities are open in logic, but not in history. Human nature is not an abstract, fixed, transcendental entity. But neither is it something which can be created by any arbitrary decision of a free individual. In each historical epoch there is a general structure of human being, as a crystallization of the whole past history of human praxis" (p. 209).