PREFACE
The discovery of the law of Evolution in the material world has prepared men for a knowledge of the law of cause and effect in the mental world. Thought is not less orderly and progressive than the material forms which embody thought; and not alone cells and atoms, but thoughts and deeds are charged with a cumulative and selective energy. In the realm of thought and deed, the good survives, for it is “fittest”; the evil ultimately perishes. To know that the “perfect law” of Causation is as all-embracing in mind as in matter, is to be relieved from all anxiety concerning
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