Professor Patrick Lee will deliver a lecture, Moral Status and the Margins of Human Life, and defend the position that the basis for being a subject of rights is having a rational nature, and that every human being has a rational nature—a radical capacity for rational acts, including deliberate choices to shape one’s life. Objections concerning the boundaries of life, including brain death, will be considered, and the position that human embryos and severely cognitively impaired human beings are subjects of rights, defended. In the course of his lecture Lee will take up and resolve the question: when/under what circumstances is a person dead?