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TO THE READER
to the causes which led the Revealer not to make His revelation irresistibly convincing. Even the explanations of the mysterious phenomena of motion, light, and chemistry, involve "difficulties" in the acceptance of still more mysterious Laws which we cannot at present explain. Nevertheless we all feel that we understand astronomy better in the light of the Law of gravitation: and in the same way some may feel that Christianity becomes more spiritual, as well as more clear, when it becomes more natural; and that many of its so-called "difficulties" fade or vanish, when what may be called its celestial and its terrestrial phenomena are found to rest upon similar principles.
