You see, in a country where they have ranks and castes, a man isn’t ever a man, he is only part of a man, he can’t ever get his full growth.
 Mark Twain, A Connecticut Yankee in King Arthur's Court (1889). copy citation

Context

“CHAPTER XXXIII SIXTH CENTURY POLITICAL ECONOMY However, I made a dead set at him, and before the first third of the dinner was reached, I had him happy again. It was easy to do—in a country of ranks and castes. You see, in a country where they have ranks and castes, a man isn’t ever a man, he is only part of a man, he can’t ever get his full growth. You prove your superiority over him in station, or rank, or fortune, and that’s the end of it—he knuckles down. You can’t insult him after that. No, I don’t mean quite that; of course you can insult him, I only mean it’s difficult;” source