Immanuel Kant

“ It need astonish no one, then, that the theoretical aspect of the Principles of the external Mine and Thine, is lost from view in the rational sphere of pure Intelligence, and presents no extension of Knowledge; for the conception of Freedom upon which they rest does not admit of any theoretical Deduction of its possibility, and it can only be inferred from the practical Law of Reason, called the Categorical Imperative, viewed as a fact. ”

“ Reason is thus compelled, in its practical function in relation to Right,—as it was in its theoretical function,—to make a distinction between Possession as a phenomenal appearance presented to the senses, and that Possession which is rational and thinkable only by the Understanding. ”

“ And such an act, if there be no prior possession of the same object by another opposed to it, does, therefore, provisionally justify and entitle me, according to the Law of external Freedom, to restrain any one who refuses to enter with me into a state of public legal Freedom, from all pretension to the use of such an object. For such a procedure is requisite, in conformity with the Postulate of Reason, in order to subject to my proper use a thing which would otherwise be practically annihilated, as regards all proper use of it. ”

“ It does not consist in the fact that because the Possessor has the presumption of being a rightful man, it is unnecessary for him to bring forward proof that he possesses a certain thing rightfully, for this position applies only to a case of disputed Right. But it is because it accords with the Postulate of the Practical Reason, that every one is invested with the faculty of having as his own any external object upon which he has exerted his Will; and, consequently, all actual possession is a state whose rightfulness is established upon that Postulate by an anterior act of Will. ”

“ For in the Critique of Pure Reason the interest of Reason turns upon the theoretical knowledge of the Nature of Things, and how far Reason can go in such knowledge. But here Reason has to deal with the practical determination of the action of the Will according to Laws of Freedom, whether the object is perceivable through the senses or merely thinkable by the pure Understanding. ”

“ The relations of Right involved in a household, and the reciprocal possession of all its members, are not annulled by the capability of separating from each other in space; because it is by juridical relations that they are connected, and the external 'Mine' and 'Thine,' as in the former cases, rests entirely upon the assumption of the possibility of a purely rational possession, without the accompaniment of physical detention or holding of the object. ”

“ This is to be distinguished from having the object brought under my disposal (in potestatem meam reductum) , which supposes not a capability merely, but also a particular act of the free-will. But in order to consider something merely as an object of my Will as such, it is sufficient to be conscious that I have it in my power. It is therefore an assumption a priori of the practical Reason, to regard and treat every object within the range of my free exercise of Will as objectively a possible Mine or Thine. ”

“ To have anything External as one's own is only possible in a Juridical or Civil State of Society under the regulation of a public legislative Power.
If, by word or deed, I declare my Will that some external thing shall be mine, I make a declaration that every other person is obliged to abstain from the use of this object of my exercise of Will ”

“ In this manner, for instance, the act of taking possession of a particular portion of the soil, is a mode exercising the private free-will without being an act of usurpation. The possessor founds upon the innate Right of common possession of the surface of the earth, and upon the universal Will corresponding a priori to it, which allows a private Possession of the soil; because what are mere things would be otherwise made in themselves and by a Law, into unappropriable objects. ”

“ The description of an Object as ‘external to me’ may signify either that it is merely 'different and distinct from me as a Subject,' or that it is also 'a thing placed outside of me, and to be found elsewhere in space or time.' Taken in the first sense, the term Possession signifies 'rational Possession;' and, in the second sense, it must mean 'Empirical Possession.' A rational or intelligible Possession, if such be possible, is Possession viewed apart from physical holding or detention (detentio) . ”

“ Yet he has the advantage on his side, of being in accord with the conditions requisite to the introduction and institution of a civil form of Society. In a word, the mode in which anything external may be held as one's own in the state of Nature, is just physical possession with a presumption of Right thus far in its favour, that by union of the Wills of all in a public Legislation, it will be made juridical ”

“ Hence I am not obliged to let alone what another person declares to be externally his, unless every other person likewise secures me by a guarantee that he will act in relation to what is mine, upon the same Principle. ”

“ Anything is ‘Mine’ by Right, or is rightfully Mine, when I am so connected with it, that if any other Person should make use of it without my consent, he would do me a lesion or injury. The subjective condition of the use of anything, is Possession of it. ”

“ Reason is forced to a Critique of its juridically Practical Function in special reference to the conception of the external Mine and Thine, by the Antinomy of the propositions enunciated regarding the possibility of such a form of Possession. ”

“ But the assumption of this Act, at the same time involves the admission that I am obliged reciprocally to observe a similar abstention towards every other in respect of what is externally theirs; for the Obligation in question arises from a universal Rule regulating the external juridical relations. ”