The Philosophy of Law: Private Right, § 25: The Rational Right of Marriage
For, this natural ‘Commercium’—as a ‘usus mem-Irorum scxnalium alterius’—is an enjoyment for which the one person is given up to the other. In this relation the human individual makes himself a ‘res,’ which is contrary to the Right of Humanity in his own Person. This, however, is only possible under the one condition, that as the one Person is acquired by the other as a res, that same Person also equally acquires the other reciprocally, and thus regains and re-establishes the rational Personality. The Acquisition of a part of the human organism being, on account of its unity, at the same time the acquisition of the whole Person, it follows that the surrender and acceptation of, or by, one sex in relation to the other, is not only permissible under the condition of Marriage, but is further only really possible under that condition. But the Personal Right thus acquired isat the same time, real in kind; and this characteristic of it is established by the fact that if one of the married Persons run away or enter into the possession of another, the other is entitled, at any time, and incontestably, to bring such a one back to the former relation, as if that Person were a Thing.