Sentence:  [In 1919 Ireland.] ‘Be quiet, Ripon! It's not nonsense at all. Ripon's father calls us “fish-eaters” and “Holy Romans” and so on. So does Ripon. So will you, Major, when you're among the “quality”. In fact, you'll become a member of <WSD>the “quality”</WSD> yourself, high and mighty, too good for the rest of us.' 
Meaning of the word marked with <WSD> tags:  The upper class, the high society, the gentry; the people of quality.