- Amnesia(used to describe the hypothetical person in this philosophical example)
- A condition where someone loses their memories, either of their past or their ability to form new memories.
- Bernard Williams(as a defender of Humean philosophy)
- A late 20th-century British philosopher who wrote influential works on ethics, questioning whether morality can be truly objective and exploring the role of personal projects and desires in a good life.
- John Locke(as a later developer of abstraction theory)
- An English philosopher (1632-1704) who argued that the human mind starts as a blank slate and learns everything through experience and sensory observation rather than being born with built-in knowledge.
- Memory-chains(Locke's specific requirement for what keeps someone the same person over time)
- Locke's idea that your identity is preserved by an unbroken chain of memories linking your past self to your present self.
- Williams's criterion(being presented as a competing standard for personal identity that differs from Locke's)
- Williams's alternative theory about what makes someone the same person—in this case, apparently based on continuity of personality or body rather than just memory.
- continuity(Greek: sunecheia; Arabic: ittiṣāl)
- A property of bodies for which Aristotle provided at least three distinct accounts
- personal identity(Philosophy of personal identity)
- The relation of sameness holding between a person existing at one time and something existing at another time, analyzed here in terms of psychological continuity
- temperament(Moral agency and ethical decision-making)
- A biologically determined disposition that colors a moral agent's distinctive perspective and inclinations toward action.