The Philosophy of Law: Private Right, § 38: The Contract of Loan
In the Contract of Commodate-Loan (commodatum) I give some one the gratuitous use of something that is mine. If it is a Thing that is given on Loan, the contracting Parties agree that the Borrower will restore the very same thing to the power of the Lender. But the Pieceiver of the Loan (commodatarius) cannot, at the same time, assume that the Owner of the Thing lent (commodam) will take upon himself all risk (casus) of any possible loss of it, or of its useful quality, that may arise from having given it into the possession of the Receiver. For it is not to be understood of itself, that the Owner, besides the use of the Thing, which he has granted to the receiver, and the detriment that is inseparable from such use, also gives a Guarantee or Wanandice against all damage that may arise from such use. On the contrary, a special Accessory Contract would have to be entered into for this purpose. The only question, then, that can be raised is this: Is it incumbent on the Lender or the Borrower to add expressly the condition of undertaking the risk that may accrue to the Thing lent; or, if this “is not done, which of the Parties is to be presumed to have consented and <l to guarantee the property of the Lender, up to restoration of the very same Thing or its equivalent? Certainly not the Lender; because it cannot be presumed that he has gratuitously agreed to give more than the mere use of the Thing, so that he cannot be supposed to have also undertaken the risk of loss of his property. But this may be assumed on the side of the Borrower; because he thereby undertakes and performs nothing more than what is implied in the Contract.
For example, I enter a house when overtaken by a shower of rain, and ask the Loan of a cloak. But through accidental contact with colouring matter, it becomes entirely spoiled while in my possession; or on entering another house, I lay it aside and it is stolen. Under such circumstances, everybody would think it absurd for me to assert that I had no further concern with the cloak but to return it as it was, or, in the latter case, only to mention the fact of the theft; and that, in any case, anything more required would be but an act of Courtesy in expressing sympathy with the Owner on account of his loss, seeing he can claim nothing on the ground of Right.—It would be other wise, however, if on asking the use of an article, I discharged myself beforehand from all responsibility, in case of its coming to grief among my hands, on the ground of my being poor, and unable to compensate any incidental loss. No one could find such a condition superfluous or ludicrous, unless the Borrower were, in fact, known to be a well-to-do and well-disposed man; because in such a case it would almost be an insult not to act on the presumption of generous compensation for any loss sustained.
Now by the very nature of this Contract, the possible damage (casus) which the Thing lent may undergo cannot be exactly determined in any Agreement. Com-modate is therefore an uncertain Contract (pactum incertum], because the consent can only be so far presumed. The Judgment, in any case, deciding upon whom the incidence of any loss must fall, cannot there fore be determined from the conditions of the Contract in itself, but only by the Principle of the Court before which it comes, and which can only consider what is certain in the Contract; and the only thing certain is always the fact as to the possession of the Thing as property. Hence the Judgment passed in the state of Nature, will be different from that given by a Court of Justice in the Civil state. The Judgment from the standpoint of Natural Right will be determined by regard to the inner rational quality of the Thing, and will run thus: ‘Loss arising from damage accruing to a Thing lent falls upon the Borrower’ (casum sentit com-modatarius); whereas the Sentence of a Court of Justice in the Civil state will run thus: ‘The Loss falls upon the Lender’ (casum sentit dominus). The latter Judg ment turns out differently from the former as the Sentence of the mere sound Reason, because a Public Judge cannot found upon presumptions as to what either party may have thought; and thus the one who has not obtained release from all loss in the Thing by a special Accessory Contract, must bear the loss.—Hence the difference between the Judgment as the Court must deliver it, and the form in which each individual is entitled to hold it for himself by his private Reason, is a matter of importance, and is not to be overlooked in the consideration of Juridical Judgments.