How many times do you need to fold the piece of paper so that you can reach the moon.

需要折纸多少次,才能碰到月亮。

哈佛公开课 - 幸福课课程节选

So if you can have a piece of paper here, and you fold it 41 times by the end of the class, you can reach the moon.

如果你们有一张纸，再在下课之前折叠41次，你就能碰到月亮。

哈佛公开课 - 幸福课课程节选

You could think, you have to think earnings are going to go up twelve-fold to get it down to four times earnings, which will take a long, long time.

你可能会想，你必然认为收益会上涨12倍,让它回落到四倍于原来收益的地方，会花费很长一段时间。

耶鲁公开课 - 金融市场课程节选