[IDEM libro septimo disputationum. ] §46.3.31.prInter artifices longa differentia est et ingenii et naturae et doctrinae et institutionis.
[THE SAME in the seventh book of Disputations.] Among craftsmen there is a great difference in talent, nature, training, and education.
ideo si nauem a se fabricandam quis promiserit uel insulam aedificandam fossamue faciendam et hoc specialiter actum est, ut suis operis id perficiat, fideiussor ipse aedificans uel fossam fodiens non consentiente stipulatore non liberabit reum.
Therefore, if someone has promised that a ship is to be built by himself, or an insula to be constructed, or a ditch to be made, and it was specially agreed that he should complete it by his own labor, the guarantor himself constructing it or digging the ditch will not release the debtor without the consent of the stipulator.
quare etiam si illis stipulationibus fideiussor accesserit: 'per te non fieri, quo minus mihi ire agere liceat?', prohibens ire fideiussor stipulationem non committit et, si patientiam praestet, non efficiet, quo minus committatur stipulatio.
For which reason, even if a guarantor has acceded to those stipulations: "that it shall not be brought about through you that I am prevented from passing and driving?", the guarantor who prevents passing does not commit a breach of the stipulation, and, if he should show tolerance, he will not prevent the stipulation from being breached.