It is no small effort for the mind, even of the most well-informed, how much more of those whose exact knowledge is not great (which is the case with most readers, and alas! with most writers also), to transport itself out of this nineteenth century which we know so thoroughly, and which has trained us in all our present habits and modes of thought, into the fifteenth, four hundred years back in time, and worlds apart in every custom and action of life. What is there indeed the same in the two ages? Nothing but the man and the woman, the living agents in spheres so different; nothing but love and grief, the affections and the sufferings by which humanity is ruled and of which it is capable. Everything else is changed: the customs of life, and its methods, and even its motives, the ruling principles of its continuance. Peace and mutual consideration, the policy which even in its selfish developments is so far good that it enables men to live together, making existence possible,scarcely existed in those days....