[Obligor] is only liable for the damages and interest which might have been contemplated at the time of the contract; for to such alone the debtor can be considered as having intended to submit.

Robert Joseph Pothier
Robert Joseph Pothier
January 9, 1699 – March 2, 1772
A treatise on the law of obligations or contracts, vol.1, 1826.

See also Punitive Damages