Christian Science breaks down both philosophically and practically just here. It is none the less a dualism because it denies that it is. It confronts not one but two ranges of reality; it gains nothing by making mortal mind the villain in the play. It is compelled to admit the existence of the reality which it denies, even in the fact of denying it. What we deny exists for us--we could not otherwise deny it. Royce has put all this clearly, strongly, finally. "The mystic first denies that evil is real. He is asked why, then, evil seems to exist. He replies that this is our finite error. The finite error itself hereupon becomes, as the source of all our woes, an evil. But no evil is real, hence no error can be real, hence we do not really err even if we suppose that evil is real. Here we return to our starting point and could only hope to escape by asserting that it is an error to assert that we really err or that we really believe error to be real, and with a process thus begun there is indeed no end, nor at any stage in this process is there consistency."[40] All this is subtle enough, but if we are to make our world by thinking and unthinking it, all this is unescapably true. [Footnote 40: "The World and the Individual," Vol. II, p. 394.] When, moreover, you have reduced one range of experience to illusion there is absolutely nothing to save the rest. If evil is error and error evil and the belief that evil is an illusion is itself an illusion what is there to guarantee the reality of good? The sword with which Mrs. Eddy cut the knot of the problem of evil is two-edged. If the optimist denies evil for the sake of good and points for proof to the solid coherency of the happier side of life, the pessimist may as justly deny good for the sake of evil and point for proof to the solid coherency of the sadder side of life; he will have no trouble in finding his facts. If sickness is a dream then health is a dream as well. Once we have taken illusion for a guide there is no stopping until everything is illusion. The Eastern mystic who went this road long before Mrs. Eddy and who thought it through with a searching subtleness of which she was incapable, reached the only logical conclusion. All experience is illusion, entire detachment from action is the only wisdom, and absorption in an unconscious something which only escapes being nothing is our appointed destiny: "We are such stuff As dreams are made of, And our little life Is rounded with a sleep." _Sense-Testimony Cannot Be Accepted for Health and Denied for Sickness_