Man doesn't even know what natural life is. And if we can't know what life is, then there is no prospect of our knowing death either. As long as life itself remains unexperienced, as long as it remains an enigma, there is no way one can be familiar with death, no way one can ever know what death is. The truth is, death seems to befall because we have no idea of what life is. For those who know life, death is an impossible word. It is something which has never occurred, never occurs, can never occur.