Aristotle's theory of potentiality / Mohan Matthen -- Disposition and potentialities / Jennifer McKitrick -- The paradoxes of potentiality / Joel Feinberg -- Physical possibility and potentiality in ethics / Edward Covey -- Abortion : listening to the middle / Edward Langerak -- Persons with potential / Jason T. Eberl -- The moral status of stem cells / Agata Sagan and Peter Singer -- Potential / Jeff McMahan -- Abortion and the margins of personhood / Margaret Olivia Little -- Revisiting the argument from fetal potential / Bertha Alvarez Manninen -- Are DCD donors dead? / Don Marquis -- The irreversibility of death : metaphysical, physiological, medical or ethical? / Tom Tomlinson -- On the ethical relevance of active versus passive potentiality / John P. Lizza