来自《耶鲁大学开放课程：心理学导论 第17集 第17集》

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  Now, dreams have always fascinated people and philosophers.
  梦总是使人们和哲学家们着迷
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  If you take a philosophy course, there'll be a couple of questions about dreams
  如果你上哲学课 将会有一大串关于梦的问题
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  that you will wonder about. One is "Are you dreaming right now?"
  这些问题会使你会感到疑惑 其中一个是"你正在做梦吗"
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  So, Rene Descartes famously wondered whether the real world doesn't exist.
  勒奈·笛卡尔提出著名的猜想 真正的世界到底是否存在
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  Maybe right now it's just a dream. See also "The Matrix."
  也许现在就只是个梦 可以参考《黑客帝国》
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  And can you be immoral in a dream?
  你可以在梦里做不道德的事情吗
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  We do all sorts of things in dreams that are bad. Are these sins?
  我们在梦里做各种各样的坏事 这些是罪恶吗
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  And the great theologians and philosophers like Augustine wondered about this,
  伟大的神学者还有哲学家 如奥古斯汀思考这个问题
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  can you sin in a dream? I will answer both questions.
  你们可以在梦里犯罪吗 我会回答以上两个问题
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  You are not dreaming right now, unless you're asleep but if you're--
  你现在不在做梦 除非你在睡觉 但是如果
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  and you can't usually be immoral in a dream. The exceptions are lucid dreams
  你也不可能总是梦到不道德的事情 清醒梦例外
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  where you choose what to dream about, and then possibly you could be immoral
  清醒梦中你可以选择做什么梦 当你习惯邪恶的思考时