The history of the Cinquecento is a history developed in broken pledges, trusts dishonoured and basest treacheries, as you shall come to conclude before you have read far in the story that is here to be set down. In a profligate age what can you look for but profligates? Is it just, is it reasonable, or is it even honest to take a man or a family from such an environment, for judgement by the canons of a later epoch? Yet is it not the method that has been most frequently adopted in dealing with the vast subject of the Borgias? To avoid the dangers that must wait upon that error, the history of that House shall here be taken up with the elevation of Calixtus III to the Papal Throne; and the reign of the four Popes immediately preceding Roderigo Borgia--who reigned as Alexander VI--shall briefly be surveyed that a standard may be set by which to judge the man and the family that form the real subject of this work. The history of this amazing Pope Alexander is yet to be written. No attempt has been made to exhaust it here. Yet of necessity he bulks large in these pages; for the history of his dazzling, meteoric son is so closely interwoven with his own that it is impossible to present the one without dealing at considerable length with the other. The sources from which the history of the House of Borgia has been culled are not to be examined in a preface. They are too numerous, and they require too minute and individual a consideration that their precise value and degree of credibility may be ascertained. Abundantly shall such examination be made in the course of this history, and in a measure as the need arises to cite evidence for one side or for the other shall that evidence be sifted. Never, perhaps, has anything more true been written of the Borgias and their history than the matter contained in the following lines of Rawdon Brown in his Ragguagli sulla Vita e sulle Opere di Marino Sanuto: “It seems to me that history has made use of the House of Borgia as of a canvas upon which to depict the turpitudes of the fifteenth and sixteenth centuries.” Materials for the work were very ready to the hand; and although they do not signally differ from the materials out of which the histories of half a dozen Popes of the same epoch might be compiled, they are far more abundant in the case of the Borgia Pope, for the excellent reason that the Borgia Pope detaches from the background of the Renaissance far more than any of his compeers by virtue of his importance as a political force. In this was reason to spare for his being libelled and lampooned even beyond the usual extravagant wont. Slanders concerning him and his son Cesare were readily circulated, and they will generally be found to spring from those States which had most cause for jealousy and resentment of the Borgia might--Venice, Florence, and Milan, amongst others.