He recalls a mother in her late 20s who came to him because she had an inoperable defect in her aorta that would rupture at some undeterminable time in the future, killing her instantly.

• 但是，关于我们为什么会倾向于感受悲伤，很多看法正在演进。从其他灵长类动物来看，表现出悲伤可能是一种自我保护的策略。