A sort of a combo; aesthetics covers a lot of ground. Attractiveness, intelligence, how interesting/valuable their job is and how skilled they are in it, how cute they are (if they're a kid or other small mammal), how well behaved they are, etc. It's a lot easier to judge any given example than lay out hard and fast rules.
People want to tell everything instead of telling the best 15 words. They want to learn everything instead of the best 15 words. In this thread, instead post the best 15-words from a book you've read recently (or anything else). It has to stand on its own. It's not a summary, the whole value needs to be contained in those words.
I'll start in the comments below.
(Voted by the Schelling study group as the best exercise of the meeting.)