A lot of people get complacent during normal times and they assume that normal times will go on forever.

风平浪静时人们容易变的自满,他们认为这太平盛世会持续到永久

耶鲁公开课 - 金融市场课程节选

So much of our life again if it is all in control, what happens when something doesn't go the way we have planned.

如果我们的生命总是风平浪静，一旦事情与我们计划的不同,我们该怎么办。

普林斯顿公开课 - 人性课程节选