Symbolism is the language of the Mysteries; in fact it is the language not only of mysticism and philosophy but of all Nature, for every law and power active in universal procedure is manifested to the limited sense perceptions of man through the medium of symbol. Every form existing in the diversified sphere of being is symbolic of the divine activity by which it is produced. By symbols men have ever sought to communicate to each other those thoughts which transcend the limitations of language. Rejecting man-conceived dialects as inadequate and unworthy to perpetuate divine ideas, the Mysteries thus chose symbolism as a far more ingenious and ideal method of preserving their transcendental knowledge. In a single figure a symbol may both reveal and conceal, for to the wise the subject of the symbol is obvious, while to the ignorant the figure remains inscrutable. Hence, he who seeks to unveil the secret doctrine of antiquity must search for that doctrine not upon the open pages of books which might fall into the hands of the unworthy but in the place where it was originally concealed... They wrote in characters that neither the vandalism of men nor the ruthlessness of the elements could completely efface, Today men gaze with awe and reverence upon the mighty Memnons standing alone on the sands of Egypt, or upon the strange terraced pyramids of Palanque. Mute testimonies these are of the lost arts and sciences of antiquity; and concealed this wisdom must remain until this race has learned to read the universal language—SYMBOLISM.The book to which this is the introduction is dedicated to the proposition that concealed within the emblematic figures, allegories, and rituals of the ancients is a secret doctrine concerning the inner mysteries of life, which doctrine has been preserved in toto among a small band of initiated minds since the beginning of the world. Departing, these illumined philosophers left their formulæ that others, too, might attain to understanding. But, lest these secret processes fall into uncultured hands and be perverted, the Great Arcanum was always concealed in symbol or allegory; and those who can today discover its lost keys may open with them a treasure house of philosophic, scientific, and religious truths...