Helen Steward is a British analytic philosopher at the University of Leeds whose work centers on action theory, free will, and the metaphysics of agency. She is best known for defending a form of libertarian free will grounded in agent causation, arguing that genuine agency requires the ability to settle what happens through one's own actions. Her 2012 monograph A Metaphysics for Freedom is a landmark contribution to debates over compatibilism and the nature of agentive power.
Developed 'agency incompatibilism': the thesis that genuine agency is metaphysically incompatible with determinism
Extended libertarian free will to non-human animals, arguing agency itself—not rationality—grounds freedom
Authored A Metaphysics for Freedom (2012), a systematic defense of agent causation
Argued that free will debates are inseparable from foundational questions in metaphysics and ethics
Advanced the concept of 'two-way powers' as central to understanding intentional agency
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