Martin Seligman [Archive.org URL]

There’s a big optimism gap between how people feel about their own lives—which is about 6.5 out of 10, on average—and how they feel about the world, which is much more like 4 [out of 10]. And I think the antidote is [to realize] that 100,150 years ago, the average lifespan was in the 40s; now it’s in the low 80s. Malnourishment; access to clean water; real income; literacy—that’s the stuff that tells you about human progress.

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