In his 2013 speech http://www.harvard03.com/holdens-2013-presentation-video at the Harvard class of 2003 reunion, June 2013
Context: But on the other hand, there are a couple of dimensions where [Harvard] alumni have much higher opinions of themselves, and these are the things I think people have come to humblebrag about. One of them is positive contribution to society: 15% of us think we're in the top 10%, and 4% of us think we're in the top 1%. The much bigger one is happiness: only 4% of us think we're below average, over 30% of us think we're in the happiest 10%, and a whopping 10% of us think we're in the happiest one percent. So I think this is going to be a really interesting and really weird reunion, because it looks like our generation has become some sort of bragging hipster generation. Instead of bragging about money and fame like traditional people do, we're way too cool for that and instead we're all high on ourselves for being good people with the right priorities in life. I think we're going to be hearing a lot of conversations along the lines of "Yeah I'm kinda poor, but I'm doing what I believe in and I'm really happy and I think that's just what matters, but I don't know, maybe that's just me." "No man I totally feel you, and actually I think I'm even poorer and happier, I mean I literally love my spouse so much I'd kill myself if we split up."
