Nathan

“Pendennis, sir," he said, "your idleness is incorrigible and your stupidity beyond example. You are a disgrace to your school, and to your family, and I have no doubt will prove so in after-life to your country. If that vice, sir, which is described to us as the root of all evil, be really what moralists have represented (and I have no doubt of the correctness of their opinion), for what a prodigious quantity of future crime and wickedness are you, unhappy boy, laying the seed! Miserable trifler! A boy who construes de and, instead of de but, at sixteen years of age is guilty not merely of folly, and ignorance, and dulness inconceivable, but of crime, of deadly crime, of filial ingratitude, which I tremble to contemplate. A boy, sir, who does not learn his Greek play cheats the parent who spends money for his education. A boy who cheats his parent is not very far from robbing or forging upon his neighbour. A man who forges on his neighbour pays the penalty of his crime at the gallows. And it is not such a one that I pity (for he will be deservedly cut off), but his maddened and heart-broken parents, who are driven to a premature grave by his crimes, or, if they live, drag on a wretched and dishonoured old age. Go on, sir, and I warn you that the very next mistake that you make shall subject you to the punishment of the rod. Who's that laughing? What ill-conditioned boy is there that dares to laugh?" shouted the Doctor.”
― William Makepeace Thackeray, The History of Pendennis