Bayta suddenly caught the meaning of the look in his eyes and froze horribly.
He shook his head. "I sense your revulsion, but that's silly. If things were otherwise, I
could make you happy very easily. It would be an artificial ecstasy, but there would be no
difference between it and the genuine emotion. But things are not otherwise. I call myself the
Mule – but not because of my strength – obviously–".
He left them, never looking back.
Isac Asimov - Foundation