Prof. Marshall Bierson unpacks Elizabeth Anscombe’s moral absolutism, arguing that questions like “Why is it worse to kill one innocent person than to let five die?” rest on a grammatical confusion that obscures the absolute wrongness of intentionally killing the innocent.

This lecture was given on October 2nd, 2025, at University of Illinois at Urbana-Champaign.

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About the Speakers:

Marshall Bierson is an assistant professor of philosophy at the Catholic University of America. His research centers on the intersection of ethics and philosophical anthropology. He is particularly focused on the work of Elizabeth Anscombe and in exploring how her Thomisticly inflected philosophical psychology clarifies moral absolutes.

Keywords: Act and Omission Distinction, Anscombe, Consequentialism, Intentional Killing of the Innocent, Logical Grammar of Moral Language, Moral Absolutism, Reasons versus Absolutes, The Trolley Problem, Victim-Focused Account of Murder

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