In the case of cold and heat, things hard and soft, light and heavy, our
						sensations of pleasure and pain depend on the whole body, I think. In good
						and evil we seem to feel pleasure or pain, as the case may be—sometimes
						through the instrumentality of the moral being only, at other times through
						that of the moral and the physical being together. Sleep, it seems clear to me, affects us with pleasure; but how and by what
						means and when are puzzles that I feel less able to solve. And perhaps it is
						no matter for surprise if our sensations are clearer when we are awake than
						when we are asleep.