Voluntariness, then, is not necessary for freedom; but it is also not sufficient for freedom, as Locke’s “locked room” and “paralytick” cases show. The man in the locked room wills to stay and talk to the other person in the room, and this volition is causally responsible for his staying in the room: on Locke’s theory, his remaining in the room is, therefore, voluntary. But the man in the locked room “is not at liberty not to stay, he has not freedom to be gone” (E1–5 II.xxi.10: 238). The reason is that even if the man wills to leave, he does not have the power to leave. Similarly, if the paralyzed person wills to remain at rest (thinking, mistakenly, that he could move if he willed to move) and his remaining at rest is caused (at least in part) by his volition not to move, then his “sitting still…is truly voluntary”. But in this case, says Locke, “there is want of Freedom” because “a Palsie [hinders] his Legs from obeying the determination of his Mind, if it would thereby transferr his Body to another Place” (E2–5 II.xxi.11: 239): that is, the paralyzed person is unable to move even if he wills to move.