"An analysis of religious beliefs in general, this volume is in particular directed against theological Christianity, the chief opponent of free thought. It contains not one word against the pure teachings of Jesus, but unsparingly denounces their debasement into pernicious ecclesiastical systems that are ruinous to man's faith in his immortality and his God, and subversive of all moral restraint. We cast our gauntlet at the dogmatic theologians who would enslave both history and science; and especially at the Vatican, whose despotic pretensions have become hateful to the greater portion of enlightened Christendom. The clergy apart, none but the logician, the investigator, the dauntless explorer should meddle with books like this. Such delvers after truth have the courage of their opinions."