Now the natural alternative is to say, the key to being the same person is not the sameness of the soul, whether or not it exists, ! but rather having the very same--body!

现在还有一个理论认为，成为同一个人的关键,不在于是否有同样的灵魂，先不管灵魂是否存在，而是拥有同样的--肉体！

耶鲁公开课 - 死亡课程节选

The question when we see exceptions, whether it's the Lykken and Tellegen study, not all twins were the same, the question is no longer whether or not change is possible, but rather how is change possible.

当我们看到了例外，无论是在Lykken和Tellegen的研究，当发现不是所有的双胞胎都一样，已不再是，改变是否有可能，而是怎样实现这种改变。

哈佛公开课 - 幸福课课程节选