"Political borders and personal boundaries, and therefore control over territory and one's very self, are not fixed. Territorial borders and personal boundaries are always contested and thus, to varying degrees, fluid." So writes Robert Brym in his introduction to this third volume of proceedings of the annual S.D. Clark Symposium. Contributors John Hannigan, Ronald J. Deibert and Louis W. Pauly, Klaus Dodds, Emily Gilbert, and Heather N. Nicol consider the many political and technological pressures on borders and boundaries in the twenty-first century. The first three chapters take a broad perspective, discussing such matters as the ongoing debate between globalists and territorialists about the future of borders and efforts to set and defend borders and boundaries in cyberspace. A detailed examination of issues involving Canada's northern and southern borders then follows, with the book's final chapter suggesting new areas for research. The Future of Canada's Territorial Borders and Personal Boundaries gathers together the revised proceedings of the third S.D. Clark Symposium on the Future of Canadian Society. The Symposium, held each year by the Department of Sociology of the University of Toronto, honours the memory of S.D. Clark, the Department's first chair and one of Canada's leading sociologists of the twentieth century.