on happiness

From David Brooks' commentary on this interesting Atlantic essay on happiness:

The men were the subject of one of the century’s most fascinating longitudinal studies. They were selected when they were sophomores, and they have been probed, poked and measured ever since. Researchers visited their homes and investigated everything from early bed-wetting episodes to their body dimensions.
...
[I]t’s the baffling variety of their lives that strikes one the most. It is as if we all contain a multitude of characters and patterns of behavior, and these characters and patterns are bidden by cues we don’t even hear. They take center stage in consciousness and decision-making in ways we can’t even fathom. The man who is careful and meticulous in one stage of life is unrecognizable in another context.

Shenk’s treatment is superb because he weaves in the life of George Vaillant, the man who for 42 years has overseen this work. Vaillant’s overall conclusion is familiar and profound. Relationships are the key to happiness. “Happiness is love. Full Stop,” he says in a video.

Brooks strikes a surprisingly Nietzschean tone in that second paragraph.