“Happiness. We're tearing our hair out to try to find a definition of it, for heaven's sake. Is it joy? People will tell you that it isn't, that joy is a fleeting emotion, a moment of happiness, which is always welcome, mind you. And then what about pleasure, huh? Oh, yes, that's easy, everybody knows what that is, but there again it doesn't last. But is happiness not the sum total of lots of small joys and pleasures, huh?”

“Very different from eros is philia, a serene love much more akin to friendship, with its reciprocal kindnesses. You love each other for the happy experiences and pleasures you share.”

“those who believed in the Good Lord, for whom death was just a journey, and it didn't make them sad at all”

“He wondered why he wasn't as in love with her as he was with...Hector had only shared enjoyment with (her)...he shared everything, enjoyment and sorrow...but for some time now they'd shared too much frustration, boredom and fatigue.”

“Knowing and feeling are two different things, and feeling is what counts.”

“He who spends too long regretting his ruined crop will be neglect to plant next year's harvest.”

“And since he was seeing more and more people who were unhappy for no apparent reason, he was becoming more and more tired, and even a little unhappy himself. He began to wonder if he was in the right profession, whether he was happy with life, whether he wasn't missing out on something. And then he felt very afraid because he wondered whether these unhappy people were contagious.”

“He had fallen in love with her emotions, and that was a very profound feeling indeed.”

“Adeline was really rather charming, she always had a man in her life, but it never worked out: either they were nice but she didn't find them very exciting; or they were exciting but she didn't find them particularly nice, or they were neither nice nor exciting and she wondered why she was with them at all. She found a way of making the exciting men nicer and that was by leaving them. But then, they weren't exciting anymore either.”

“Or rather, he was sad because that morning he'd understood that he'd understood nothing, because while he still understood nothing he wasn't sad at all, but now that he'd understood that he'd understood nothing he felt sad, if you follow.”

“Some people, very many actually, both men and women, complained of having enjoyed a very loving relationship with someone, but of no longer feeling the same way despite still being very fond of that person, with whom they generally lived.”