David Eddings said this quote

“ Zakath stared at the floor. 'I suddenly feel very helpless,' he admitted, 'and I don't like the feeling. I've been rather effectively dethroned, you know. This morning I was the Emperor of the largest nation on earth; this afternoon, I'm going to be a vagabond.'You might find it refreshing,' Silk told him lightly.Shut up, Kheldar,' Zakath said almost absently. He looked back at Polgara. 'You know something rather peculiar?'What's that?'Even if I hadn't given my word, I'd still have to go to Kell. It's almost like a compulsion. I feel as if I'm being driven, and my driver is a blindfolded girl who's hardly more than a child.'There are rewards,' she told him.Such as what?'Who knows? Happiness, perhaps.'He laughed ironically. 'Happiness has never been a driving ambition of mine, Lady Polgara, not for a long time now.'You may have to accept it anyway,' She smiled. 'We aren't allowed to choose our rewards any more than we are our tasks. Those decisions are made for us. ”