Noblesse oblige
Noblesse oblige (; French: [nɔblɛs ɔbliʒ] (listen); literally “nobility obliges”) is a French expression that retains in English the meaning that nobility extends beyond mere entitlement, requiring people who hold such status to fulfill social responsibilities. For example, a primary obligation of a nobleman could include generosity towards those around him. As those who lived on the nobles' land had obligations to the nobility, the nobility had obligations to their people, including protection at the least.According to the Oxford English Dictionary, the term suggests "noble ancestry constrains to honourable behaviour; privilege entails responsibility." The Dictionnaire de l'Académie française defines it thus:

Whoever claims to be noble must conduct himself nobly.
(Figuratively) One must act in a fashion that conforms to one's position and privileges with which one has been born, bestowed and/or has earned.
OED and others cite the source of the phrase as Maxims (1808) by Pierre Marc Gaston de Lévis, Duke of Lévis.

Meaning and variants
Noblesse oblige is generally used to imply that wealth, power, and prestige come with responsibilities. In ethical discussion, the term is sometimes used to summarize a moral economy wherein privilege must be balanced by duty towards those who lack such privilege or who cannot perform such duty. Recently, it has been used to refer to public responsibilities of the rich, famous and powerful, notably to provide good examples of behaviour or exceed minimal standards of decency. It has also been used to describe a person taking the blame for something in order to solve an issue or save someone else.

History and examples
An early instance of this concept in literature may be found in Homer's Iliad. In Book XII, the hero Sarpedon delivers a speech in which he urges his comrade Glaucus to fight with him in the front ranks of battle. In Pope's translation, Sarpedon exhorts Glaucus thus:

In Luke 12:48 Jesus is saying: "Everyone to whom much was given, of him much will be required, and from him to whom they entrusted much, they will demand the more."
In Le Lys dans la Vallée, written in 1835 and published in 1836, Honoré de Balzac recommends certain standards of behaviour to a young man, concluding: "Everything I have just told you can be summarized by an old word: noblesse oblige!" His advice included "others will respect you for detesting people who have done detestable things."
The phrase is carved into Bertram Goodhue's Los Angeles Public Library on a sculpture by Lee Lawrie as part of Hartley Burr Alexander's iconographic scheme for the building.In the song "The Life I Lead" from the 1964 Disney film Mary Poppins, the character Mr. Banks (played by David Tomlinson) uses the phrase: "I'm the lord of my castle! The sovereign! The liege! I treat my subjects, servants, children, wife, with a firm but gentle hand. Noblesse oblige."

Critique
Some critics have argued that noblesse oblige, while imposing on the nobility a duty to behave nobly, gives the aristocracy a justification for their privilege. Jurists Dias and Hohfeld have pointed out that rights and duties are jural corelatives, which means that if someone has a right, someone else owes them a duty. Dias's reasoning was used in Murphy v Brentwood District Council (1991) to disapprove Lord Denning MR's judgment in Dutton v Bognor Regis Urban District Council (1972).

See also
References
Notes

Sources

Oxford English Dictionary (1989). New York: Oxford University Press.
Roberts, Jennifer Tolbert (1994). Athens on Trial: The Antidemocratic Tradition in Western Thought. Princeton, New Jersey: Princeton University Press. ISBN 9780691029191.
The Scarlet Pimpernel (film, 1982). London Film Productions Limited. 2003 DVD ID#191LFDVD.