"I've never had opportunity or reason to perform that service for anyone," Daneel said, rather thoughtfully. "Kobra, I don't have any sort of sex drive. I cannot have an orgasm. Still..."

He had thought about this, especially after the deacivation, the death of friend Jander.

"Still, it seems to me that I would find it pleasurable to provide that sort of pleasure for someone, particularly a friend whose well-being was important to me."