 If Socrates has a different consciousness by day than he does by night, then waking Socrates ought not be punished for what sleeping Socrates does. This is because although Socrates is the same man by day as he is by night, he is a different person by day than he is at night (and moral responsibility lies with persons, according to Locke). Thus while the identity of consciousness determines the identity of person, the identity of persons and the identity of men come apart for Locke—or at least they  can.[3] 