Since we are thus led to treat of the nature of matter, we must first premiss that the nature of existence, "being" and essence[49] are not what they are thought to be by people generally. Existence is; it "is" in the genuine meaning of that word; that is, it "is" essentially; it is absolutely, lacking nothing of existence. Fully being existence, its existence and preservation are not dependent on anything else; so much the more, if other things seem to be, they owe this thereto. If this be true, existence must possess life, perfect life--for otherwise it would not be existence any more than non-existence. Now perfect life is intelligence and perfect wisdom. Existence therefore is determinate and definite. Nothing outside of it exists even potentially; otherwise it would not fully satisfy itself. It is therefore eternal, immutable, incapable of receiving anything, or of adding anything to itself; for what it would receive would have to be foreign to it, and consequently be nonentity. In order to exist by itself, existence must therefore possess all things within itself; it must be all things simultaneously, it must at the same time be one and all, since this is of what we consider existence to consist; otherwise instead of emanating from existence, intelligence and life would be incidental thereto. Therefore they could not originate from nonentity; and, on its side, existence could not be deprived of intelligence and life. True nonentity, therefore, will have intelligence and life only as they must exist in objects inferior and posterior to existence. The principle superior to existence (the One), on the other hand, gives intelligence and life to existence, without itself needing to possess them.[50] MATERIALISTS CANNOT UNDERSTAND HOW SOLID EARTH IS NEAREST NONENTITY; AND WHY GREATEST EXISTENCE IS LEAST MATERIAL.