Those among the old-old who love life are not exceptions––they are just healthy. …[ They ] seem constantly to be reinventing their lives. They surprise us even as they surprise themselves. In moments of sorrow, loss, and defeat many still convince us that they find their lives eminently worthwhile. They do not flinch from acknowledging how hard life is but they also never lose sight of why one might want to keep on living it.
–– George Vaillant
Aging Well, p. 5