You are not a psychopath, and you are alive.

说明你不是精神病人，也还没死。

哈佛公开课 - 幸福课课程节选

Against that, you can imagine someone who thinks being alive per se is so incredibly valuable that no matter how horrible the contents are, the grand total will always be positive.

与之相反，你可以想象有些人会认为,活着本身有着巨大的价值,不管生活内容有多糟糕，总和都会是正数。

耶鲁公开课 - 死亡课程节选

Now, notice that since we are adding extra positive facts, extra positive points, for the fact that you're alive, even if the contents subtotal is negative, the grand total could still be positive.

由于我们添加了额外的积极事物，额外的正数，因为你活着，就算生活内容的部分总和是负数，但它的总和可能仍然是正数。

耶鲁公开课 - 死亡课程节选