I DON'T CARE!" Harry yelled ...

I DON\'T CARE!\
I DON'T CARE!" Harry yelled at them, snatching up a lunascope and throwing it into the fireplace. "I'VE HAD ENOUGH, I'VE SEEN ENOUGH, I WANT OUT, I WANT IT TO END, I DON'T CARE ANYMORE!" "You do care," said Dumbledore. He had not flinched or made a single move to stop Harry demolishing his office. His expression was calm, almost detached. "You care so much you feel as though you will bleed to death with the pain of it.
 J. K. Rowling

Quotes from the same author

Raindrops the size of bullets thundered on the castle windows for days on end; the lake rose, the flower beds turned into muddy streams, and Hagrid’s pumpkins swelled to the size of garden sheds.
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 J. K. Rowling
He didn't realize that love as powerful as your mother's for you leaves its own mark.
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 J. K. Rowling
I am prouder of my years as a single mother than of any other part of my life.
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 J. K. Rowling
So why in the name of Merlin’s saggy left — Don’t talk to your mother like that.
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 J. K. Rowling
Hermione drew herself to her full height; her eyes were narrowed and her hair seemed to crackle with electricity. "No," she said, her voice quivering with anger, "but I will write to your mother.
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 J. K. Rowling