Lecture VII

Let us imagine we have here the receiver of an air-pump, say a glass bell-jar, and suppose we succeed in making a really perfect vacuum inside it. That is very nearly possible ordinarily. Everyone whose intellect is bound to the world of sense will now say, “Inside there is no air, only an empty space; we cannot go any farther, there cannot be less than no air inside.” Actually that is not true. We can pump until no air at all is left, then go on pumping until we get a space still more empty of air than a vacuum. People dependent on the material will find it difficult to imagine this “less than nothing.” Or, suppose you have ten shillings in your pocket. You can gradually spend them until you have nothing left. In this domain of life there is a real “less than nothing.” It is often one of the strongest realities—you can go into debt for a few shillings. In practical life less-than-nothing is often more intensely real than the reality of possession.