The poetry in the doctrines of Jesus Christ, and the mythology and institutions of the Celtic conquerors of the Roman empire, outlived the darkness and the convulsions connected with their growth and victory, and blended themselves in a new fabric of manners and opinion. It is an error to impute the ignorance of the dark ages to the Christian doctrines or the predominance of the Celtic nations. Whatever of evil their agencies may have contained sprang from the extinction of the poetical principle, connected with the progress of despotism and superstition. Men, from causes too intricate to be here discussed, had become insensible and selfish: their own will had become feeble, and yet they were its slaves, and thence the slaves of the will of others; lust, fear, avarice, cruelty, and fraud, characterized a race amongst whom no one was to be found capable of _creating_ in form, language, or institution. The moral anomalies of such a state of society are not justly to be charged upon any class of events immediately connected with them, and those events are most entitled to our approbation which could dissolve it most expeditiously. It is unfortunate for those who cannot distinguish words from thoughts, that many of these anomalies have been incorporated into our popular religion. It was not until the eleventh century that the effects of the poetry of the Christian and chivalric systems began to manifest themselves. The principle of equality had been discovered and applied by Plato in his _Republic_, as the theoretical rule of the mode in which the materials of pleasure and of power, produced by the common skill and labour of human beings, ought to be distributed among them. The limitations of this rule were asserted by him to be determined only by the sensibility of each, or the utility to result to all. Plato, following the doctrines of Timaeus and Pythagoras, taught also a moral and intellectual system of doctrine, comprehending at once the past, the present, and the future condition of man. Jesus Christ divulged the sacred and eternal truths contained in these views to mankind, and Christianity, in its abstract purity, became the exoteric expression of the esoteric doctrines of the poetry and wisdom of antiquity. The incorporation of the Celtic nations with the exhausted population of the south, impressed upon it the figure of the poetry existing in their mythology and institutions. The result was a sum of the action and reaction of all the causes included in it; for it may be assumed as a maxim that no nation or religion can supersede any other without incorporating into itself a portion of that which it supersedes. The abolition of personal and domestic slavery, and the emancipation of women from a great part of the degrading restraints of antiquity, were among the consequences of these events.