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Margaret Gilbert (born 1942) is a philosopher best known for her work in the philosophy of social science, and, more specifically, for her founding contributions to the analytic philosophy of social phenomena. She has also made substantial contributions to other philosophical fields including political philosophy, the philosophy of law, and ethics.
Gilbert was born in the United Kingdom and obtained a "double first" B. A. degree in Classics and Philosophy from Cambridge University and a B. Phil. and D. Phil. degree in Philosophy from Oxford University. From 1983 until 2006, she taught at the University of Connecticut, Storrs, where she was Professor of Philosophy. As of Fall 2006, she holds the Abraham I. Melden Chair in Moral Philosophy at the University of California, Irvine. She has been a visiting teacher and researcher at many academic institutions including Princeton University, the Institute for Advanced Study, Princeton, the University of Pennsylvania, Indiana University, Wolfson College, Oxford, Technische Universität Dresden, King's College London, and the Swedish Collegium for Advanced Study in the Social Sciences, and regularly gives invited lectures in the United States, Europe, and elsewhere. Gilbert was married to noted philosopher Saul Kripke and is the sister of famed British historian Sir Martin Gilbert.
In her book On Social Facts (1989) Gilbert presented novel accounts of a number of central social phenomena in the context of critical reflections on proposals by the founders of sociology Émile Durkheim, Georg Simmel, and Max Weber and others, including the philosopher David Lewis. The phenomena discussed include social conventions, social groups in a central sense of the term, group languages, collective belief, and acting together. Gilbert argued that these were all 'plural subject phenomena'. In a summary passage she writes, with allusion to Rousseau, that "One is willing to be the member of a plural subject if one is willing, at least in relation to certain conditions, to put one's own will into a 'pool of wills' dedicated, as one, to a single goal (or whatever it is that the pool is dedicated to)" (18). If two or more people have openly expressed such willingness in relation to a particular goal, in conditions of common knowledge, then the pertinent pool of wills is set up. In other words, the people concerned constitute the plural subject of the goal. As an alternative to talking of a pool of wills Gilbert refers also to joint commitment as when she writes: " the wills of the parties are jointly committed" (198). In later work she has preferred the language of joint commitment. Gilbert compares the plural subject to the singular subject and argues, with allusion to Durkheim, that "In order for individual human beings to form collectivities, they must take on a special character, a 'new' character, insofar as they need not, qua human beings, have that character. Moreover, humans must form a whole or unit of a special kind...a plural subject" (431).
In subsequent writings Gilbert has continued the development and application of her plural subject theory. Each of the essay collections 'Living Together" (1996), 'Sociality and Responsibility' (2000) and 'Marcher Ensemble' (in French) (2003) is composed of relevant papers authored by Gilbert.
In her book 'A Theory of Political Obligation' (2006; 2008) Gilbert offers a new perspective on a classical problem in political philosophy, generally known as 'the' problem of political obligation. As Gilbert makes clear in her book, there are many versions of this problem. She addresses the question whether there is something about one's being the member of a particular society that means one is obligated to uphold the political institutions of that society. Unlike most contemporary writers on the subject, she does not insist that the obligation in question is a matter of moral requirement. Gilbert argues that there are obligations of a different sort, and that these that are a function of membership in a political society construed as membership in a particular kind of plural subject constituted, as are all plural subjects, by a joint commitment.
Other topics Gilbert has addressed in one or more of her publications include agreements and promises, authority, collective emotions, collective responsibility, personal decisions and intentions, marital love, mutual recognition, patriotism, rights (in particular claim-rights), shared attention, shared values, social rules, and social unity.
Gilbert's essay collection Joint Commitment (2013) contains eighteen recent papers that together address most of the topics in the above list along with several others that Gilbert argues can be illuminated by an appeal to joint commitment.
- On Social Facts, London, New York: Routledge, (1989, Reprinted 1992)
- Living Together: Rationality, Sociality, and Obligation, Rowman and Littlefield, Lanham, MD. (1996)
- Sociality and Responsibility: New Essays in Plural Subject Theory, Rowman and Littlefield, Lanham, MD. (2000)
- Marcher Ensemble: Essais sur les Fondements des Phenomenes Collectifs, Presses Universitaires de France: Paris, France, (2003)
- A Theory of Political Obligation: Membership, Commitment, and the Bonds of Society, Oxford University Press: Oxford (2006)(2008)
- Joint Commitment: How We Make the Social World, Oxford University Press: New York (2013).
- "Margaret Gilbert Professor of Philosophy". Retrieved 28 January 2013.