If dark matter particles exist, scientists say, they should be able to observe a small amount of light given off when they hit the nucleus of a xenon atom.

VOA: special.2009.07.21

That is, if they exist through Darwinian natural selection, ? to what extent can we ever get rid of them?

如果性别差异存在于,达尔文所说的自然选择当中，我们可以消除性别差异吗？

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And then perhaps the right thing to say is the person no longer exists, so they no longer exist as a person, even if the body is still alive.

也许正确的说法应该是,这个人已经不存在了，他们作为人的身份已经消失，即便肉体还是活着的。

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If you find this argument convincing, what it's an argument for is the claim that even if souls do exist, they may not be the key to personal identity.

如果你信服这个观点，我们要证明的是,就算灵魂真的存在，也不是人格同一性的关键。

耶鲁公开课 - 死亡课程节选