"I know a little of this man, Sandor Clegane. He was Prince Joffrey’s sworn shield for many a year, and even here we would hear tell of his deeds, both good and ill. If even half of what we heard was true, this was a bitter, tormented soul, a sinner who mocked both gods and men. He served, but found no pride in service. He fought, but took no joy in victory. He drank, to drown his pain in a sea of wine. He did not love, nor was he loved himself. It was hate that drove him. Though he committed many sins, he never sought forgiveness. Where other men dream of love, or wealth, or glory, this man Sandor Clegane dreamed of slaying his own brother, a sin so terrible it makes me shudder just to speak of it. Yet that was the bread that nourished him, the fuel that kept his fired burning. Ignoble as it was, the hope of seeing his brother’s blood upon his blade was all this sad and angry creature lived for… and even that was taken from him, when Prince Oberyn of Dorne stabbed Ser Gregor with a poisoned spear."
The Elder Brother (George R. R. Martin), A Feast for Crows, Page 669 (via robertcarlylesgirl)