Natural obligation

NATURAL OBLIGATION, Civil law. One which in honor and conscience binds the person who has contracted it, but which cannot be enforced in a court of justice. Poth. n. 173, and n. 191. See Obligation.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in classic literature ?
I have had some slight correspondence with your former friend, sir,' addressing me, 'but it has not restored his sense of duty or natural obligation. Therefore I have no other object in this, than what Rosa has mentioned.
I wish we could be brought to consider this, and remembering natural obligations a little more at the right time, talk about them a little less at the wrong one.'
'If there is anything real in this world, it is those amazingly fine feelings and those natural obligations which must subsist between father and son.
Whereas natural obligation is a pressure or a propulsive force, complete and perfect morality has the effect of an appeal (Bergson 1935: 34).
There is no way to understand why an individual enjoying a freedom unfettered by any laws or kind of natural obligation (an obligation preexisting the contract) would enter a contractual relationship unless it is, regardless of what it may mean for the other contracting parties, useful to him first.
and Argentine Civil Code articles 549-50, a natural obligation could not
Under that form of government, the strong willingly accept their natural obligation to respect and serve the needs even of the weakest among us.
People of different faiths or of no faith can recognize the natural obligation to respect the property of others.
we are overpaid according to justice when the recompense equals our service, for do we owe no service to our prince by natural obligation? (16) If he bears our expenses he does too much; it is enough that he helps out.
Yet, even in light of this unanimous consent, the children and grandchildren of these individuals would not be obliged to share goods because they "receive the right to property from nature and not from their progenitors." In his earlier writings Vazquez contended that citizens "have mutually bound themselves, by their consent, to obey the law, which gives rise to a natural obligation, which is an obligation of conscience." In his later works, he insisted that the "prince has no power to oblige beyond the power given him by the citizens."
Traditionally at least, the undeniable gap between "literati" and peasant cultures notwithstanding, the proper Confucian intellectual/official considered the welfare of those under him to be a natural obligation of his office.
He said the planting trees and taking care of these is a religious and natural obligation.

Full browser ?