Responsorum libri
Ex libro XV
Dig. 39,5,23Idem libro quinto decimo responsorum. Modestinus respondit creditorem futuri temporis usuras et remittere et minuere pacto posse nec in ea donatione ex summa quantitatis aliquid vitii incurrere. 1Modestinus respondit mente captum donare non posse.
The Same, Opinions, Book XV. Modestinus gives it as his opinion that a creditor can, by mere agreement, entirely remit or diminish the amount of interest to be due hereafter, without affecting the validity of the donation on the ground that the amount is illegal. 1It is the opinion of Modestinus that a person whose mind is affected cannot make a donation.