Burke, Michael B.2016-02-182016-02-181994Journal of Philosophy 91 (3): 129-139https://hdl.handle.net/1805/8358Dion is a full-bodied man. Theon is that part of him which consists of all of him except his left foot. What becomes of Dion and Theon when Dion’s left foot is amputated? Employing the doctrine of sortal essentialism, I defend a surprising answer last defended by Chrysippus: that Dion survives while the seemingly unscathed Theon perishes.enmaterial constitutionidentity puzzlesessentialismArticle