In such a case, neither the plane, nor the sack of corn, would reproduce themselves.

But it is not for the sake of leaving the money in the bag, nor the plane on the hook, that they are borrowed.

The plane is borrowed to be used, or the money to procure a plane.

And if it is clearly proved that this tool enables the borrower to obtain profits which he would not have made without it, if it is proved that the lender has renounced creating for himself this excess of profits, we may understand how the stipulation of a part of this excess of profits in favor of the lender, is equitable and lawful.
Ignorance of the true part which cash plays in human transactions, is the source of the most fatal errors.

I intend devoting an entire pamphlet to this subject.