As in mathematics a reversed statement proves the rule, so, also, in the science of life, for example: There is no pain in Truth, and no Truth in pain; no matter in mind, and no mind in matter; no nerve in Intelligence, and no Intelligence in nerve; no matter in Spirit, and no Spirit in matter, etc. That man should lose his identity because Soul is not in body, and Intelligence in matter, is quite as impossible as that tones of music should be lost in their Principle. (Eddy, Mary Baker, Science and Health, 1st ed., p.209)