After a 50-page tour of brainyquotes from all the intellectual giants of your middle school education, Lieberman gets into the science - and it's pretty solid. I'll never understand why this guy felt the need to spend 1/6th of his book arguing why humans are social creatures... who was saying otherwise?

There are some gnarly tidbits in here - 

Tylenol can ease social pain, 

our ability to memorize improves if the items in memory task are recontextualized to be about understanding another person, 

our ability to learn improves if we are tasked with teaching the lesson to someone else, 

participating in motor-control trials can prime the brain to process negative emotions more effectively, 

having a good friend you see regularly is worth the same amount of happiness as a $100,000 bump in salary, etc.

Me likey! Me likey. 

But homie needs to stop with the quotes. I wish we cut all the "Adam Smith said X" shit and stuffed this thing full of more awesome research.