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CHAP. VI. jurisprudence. This indeed is the proper moment for suggesting a doubt which will press on us with greater force the further we plumb the depths of this subject,—whether wills would ever have come into being at all if it had not been for these remarkable ideas connected with universal succession. Testamentary law is the application of a principle which may be explained on a variety of philosophical hypotheses as plausible as they are gratuitous; it is interwoven with every part of modern society, and it is defensible on the broadest grounds of general expediency. But the warning can never be too often repeated, that the grand source of mistake in questions of jurisprudence is the impression that those reasons which actuate us at the present moment, in the maintenance of an existing institution, have necessarily anything in common with the sentiment in which the institution originated. It is certain that, in the old Roman Law of Inheritance, the notion of a will or testament is inextricably mixed up, I might almost say confounded, with the theory of a man's posthumous existence in the person of his heir.

The conception of a universal succession, firmly as it has taken root in jurisprudence, has not occurred spontaneously to the framers of every body of laws. Wherever it is now found, it may be shown to have descended from Roman law; and with it have come down a host of legal rules on the subject of