"If you were madly in love, you'd want me to win,' said Katherine. "'I'm not sure that's true,' said Sam. 'I think love is about equality: both of us equally happy with either result. One-sided self-sacrifice is only enabling someone else's egoism. Altruists always end up riddled with resentment, or if they make that last superhuman effort, with spiritual pride.' "'Oh,' said Katherine, 'you mean you're not going to enable my egoism.' "'Okay, okay,' said Sam 'you're right - love is doing everything you want all the time."