Nature has buffered out children not only physically — prepubescent children have the lowest death rate from all causes — but psychologically as well… - Martin E P Seligman

15 A. de Tocqueville, Democracy in America (Nueva York: Perennial Classics, 2000). En La democracia en América, Tocqueville explicó que el concepto de felicidad que tenía Jefferson se relacionaba con el dominio de uno mismo para alcanzar la realización duradera. Por lo tanto, la felicidad según Jefferson se parece mucho más al bienestar perdurable que al placer temporal. D. M. McMahon, Happiness: A History (Nueva York: Atlantic Monthly Press, 2006). La mejor fuente sobre la evolución histórica del concepto de felicidad.

Now we introduce a three-step model, “Putting It in Perspective,” for disputing catastrophic thinking: worst case, best case, most likely case.

The optimist believes that bad events have specific causes, while good events will enhance everything he does; the pessimist believes that bad events have universal causes and that good events are caused by specific factors.