The effort to achieve greater European unity has absorbed the interests and energies of a number of Europeans and Americans since the end of World War II. Edward Heath, who led Britain's earliest attempt to join the European Economic Community, first made this comprehensive statement of the philosophy and purpose behind the movement for European unity in a series of lectures he gave at Harvard Universityin March 1967. In discussing the future development of Europe, Mr. Heath considered factors relating to domestic and foreign politics, economics, and defense, presenting a complete picture of Europe and suggesting a course that might bring about a successful unity.