来自《耶鲁大学开放课程：心理学导论第20集第20集》

about half the differences between people,

有一半是因为个性
are due to genetic factors

由基因决定
but we don't know how to explain where the other half happens.

但我们不知道如何解释另一半
It has to be experienced

应该是由于经历不同
but we have no real good theories of the sort of experience

但我们不能很好地解释是何种经历
that makes one person adventurous and another one timid,

让一个人很爱冒险而另一个很保守
one bitter and one satisfied.

一个很刻薄一个很知足
We know a lot about the social influences

我们十分了解社交影响
that can drive people to do terrible things to one another

它能使一个人对其他人做出可怕的举动
but we don't know the answer to the maybe harder question of

但我们无法回答更难的问题
why some of us--

为什么有些人
some people are immune to these influences,

能不受它影响