To write currente calamo for the mere pastime of author and readers, without aiming to inculcate some regenerative principle, or to photograph some valuable phase of protean truth, was in her estimation ignoble; for her high standard demanded that all books should be to a certain extent didactic, wandering like evangels among the people, and making some man, woman, or child happier, or wiser, or better--more patient or more hopeful--by their utterances. Believing that every earnest author's mind should prove a mint, where all valuable ores are collected from the rich veins of a universe -- are cautiously coined, and thence munificently circulated--she applied herself diligently to the task of gathering from various sources the data required for her projected work: a vindication of the unity of mythologies. The vastness of the cosmic field she was now compelled to traverse, the innumerable ramifications of polytheistic and monotheistic creeds, necessitated unwearied research, as she rent asunder the superstitious vails which various nations and successive epochs had woven before the shining features of truth. To-day peering into the golden Gardens of the Sun at Cuzco; to-morrow clambering over Thibet glaciers, to find the mystic lake of Yamuna; now delighted to recognize in Teoyamiqui (the wife of the Aztec God of War) the unmistakable features of Scandinavian Valkyrias; and now surprised to discover the Greek Fates sitting under the Norse tree Ygdrasil, deciding the destinies of mortals, and calling themselves Nornas; she spent her days in pilgrimages to mouldering shrines, and midnight often found her groping in the classic dust of extinct systems. Having once grappled with her theme, she wrestled as obstinately as Jacob for the blessing of a successful solution, and in order to popularize a subject bristling with recondite archaisms and philologic problems, she cast it in the mould of fiction.