ABSTRACT
THERE is a use of the word ‘dream’, and it is the basic sense of the word, in which a person cannot dream unless he is asleep. The criterion of someone’s having had a dream, in this sense, is that upon awaking he tells a dream. It is possible for a person to fall asleep and to sleep soundly for an hour, and then, after being suddenly awakened, to tell a dream. The various criteria of sleep that were previously mentioned could be perfectly satisfied, so that there would be no question that he had been sound asleep during that hour. But the criterion of his having dreamt would also be satisfied. It makes sense, therefore, to say of someone both that he was sound asleep for an hour and that he dreamt during that sleep.
