 Man’s body and man’s mind are not two different things, but the same thing… as known in two different ways. Not a part of man, but the whole of man is body in so far as he approaches the problem of self-knowledge by the methods of natural science. Not a part of man, but the whole of man is mind, in so far as he approaches the problem of self-knowledge by expanding and clarifying the data of reflection. (NL 1992: 11)