Meaning of the sentence "A gentleman is someone who does not what he wants to do but what he should do' [closed]

Solution 1:

The sentence means, roughly, that there are obligations incumbent on someone who aspires to the status of gentleman (or higher). Cf. noblesse oblige.

Noblesse oblige (/noʊˌblɛs əˈbliːʒ/; French: [nɔblɛs ɔbliʒ]) is a French expression used in English. It translates as "nobility obliges" and denotes the concept that nobility extends beyond mere entitlements and requires the person who holds such a status to fulfill social responsibilities. For example, a primary obligation of a nobleman could include generosity towards those around him.