noblesse oblige

Literally means, "nobility obliges". It's generally used to imply that with wealth, power, and prestige come social responsibility. It's mostly used to refer to the wealthy who are condescending and shower their money and privileges upon those who don't necessarily want it.

A gentleman without a gentleman's appendage.

A Noble person blessed by god.
Comes from the French word meaning "noble" and refers to someone that acts like a noble person in everything him/her do.