Passage 6
Questions 26 to 30 are based on the following passage.
Arthur Morel was growing up. He was a quick less, impulsive boy, a good deal like his father. He hated study, made a great moan if he had to work, and escaped as soon as possible to his sport again.
In appearance he remained the flower of the family, being well made, graceful, and full of life. His dark brown hair and fresh colouring, and his exquisite dark blue eyes, together with his generous manner and fiery temper (急脾气)，made him a favourite. But as he grew older his temper became uncertain. He flew into rages over nothing, seemed unbearably raw and irritable.
His mother, whom he loved, wearied of him sometimes. He thought only of himself. When he wanted amusement, all that stood in his way he hated, even if it were she. When he was in trouble he moaned to her ceaselessly.
“Goodness,boy!” she said,when he groaned about a master who, he said，hated him, “if you don't like it,alter it,and if you can't alter it,put up with it.”
And his father, whom he had loved and who had worshipped him, he came to detest. As he grew older, Morel fell into a slow ruin. There came over him a look of meanness and of paltriness (微不足道).And when the mean-looking elderly man bullied or ordered the boy about, Arthur was furious. Moreover, Morel's manners got worse and worse, his habits somewhat disgusting.
“Dirty nuisance!” Arthur would cry,jumping up and going straight out of the house when his father disgusted him. And Morel persisted the more because his children hated it. He seemed to take a kind of satisfaction in disgusting them, and driving them nearly mad, while they were so irritably sensitive at the age of fourteen or fifteen. So that Arthur, who was growing up when his father was degenerate and elderly, hated him worst of all.
Then，sometimes，the father would seem to feel the contemptuous (藐视的)hatred of his children.
“There's not a man tries harder for his family!” he would shout. “He does his best for them，and then gets treated like a dog. But I'm not going to stand it,I tell you!”
As it was, the battle now went on nearly all between father and children, he persisting in his dirty and disgusting ways, just to assert his independence. They hated him.
Why did the father persist in his way of treating his children?