The book is written in all sincerity. It is meant to do even justice, and to speak the truth alike without malice or prejudice. But it shows neither mercy for enthroned error, nor reverence for usurped authority. It demands for a spoliated past, that credit for its achievements which has been too long withheld. It calls for a restitution of borrowed robes, and the vindication of calumniated but glorious reputations. Toward no form of worship, no religious faith, no scientific hypothesis has its criticism been directed in any other spirit. Men and parties, sects and schools are but the mere ephemera of the world's day. Truth, high seated upon its rock of adamant, is alone eternal and supreme.