From a scientific point of view, its dangerousness is of course much greater inasmuch as it extends its methods over every organic disease and thus applies merely psychical treatment where from a standpoint of scientific medicine, physical treatment would be absolutely necessary. Moreover its philosophy is after all only a pseudophilosophy; its tempting equations of disease and error and sin and unreality are ultimately a mere playing with conceptions. If we were to point to the root of the misunderstanding in Christian Science, we should say that everything depends on the philosophical commonplace that the objects with which we deal in our life are ideas and that our whole experience is mind. "Christian Science reveals incontrovertibly that Mind is All-in-All, that the only realities are the divine mind and idea." But now silently this mental character of the real world is identified with the mental experience which stands in contrast to the physical experience. There results the impression that physical experience therefore, does not belong to the world of reality. It is evident, however, that mental in contrast to physical means something entirely different from mental in the philosophical sense. In the latter meaning of the word, we all agree that the world is mental; the word mental indicates there that the world has reality not in itself but only as experience of subjects. In the second sense, mental or psychical means that it is experience for one particular subject only and not for every possible subject. The physical thing, for instance this table, is indeed different from my mental memory idea of a table, inasmuch as every possible subject can experience this table while my mental memory image belongs to me alone. The physical table and the mental memory image of it are both equally mental in the philosophical sense, inasmuch as the physical which is object for every possible subject and in this sense not mental is therefore not less given to subjects. Every physical body with its disease is thus in one sense taken as something not mental while in another sense as mental; if we use the same word in two entirely different meanings, it indeed cannot be difficult to demonstrate any metaphysical consequences.