Anthony Giddens built structuration theory to settle sociology's oldest quarrel: whether society shapes people or people make society. His answer was that the question is badly posed. Social structures exist only as they are reproduced by the actions they make possible, so structure and agency are two aspects of a single process — the argument of The Constitution of Society (1984). He then turned to what modernity does to the self. Modernity and Self-Identity (1991) argued that in societies where tradition no longer supplies an answer, identity becomes a reflexive project: something each person must construct, narrate and continually revise, with expert systems and manufactured risk as the conditions of the work. Giddens directed the London School of Economics from 1997 to 2003 and became the intellectual architect of the Third Way, advising Tony Blair and Bill Clinton on a politics positioned beyond left and right — a role that drew as much criticism as his scholarship drew citations. He co-founded Polity Press, sits in the House of Lords as Baron Giddens, and is among the most cited social theorists alive.