And, moreover, they are at right angles to one another that we've learned.

更多的是，根据我们所学的知识,它们都是和另外一个互成直角。

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If you and I are Facebook friends, or we are following each other on Twitter,

如果我们是脸书上的好友，我们在推特上也互粉，

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Well, we know the eternal forms; takes one to know one.

我们知道永恒的型相,并且知道同类互知

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So if we start actually pushing ourselves to think about examples-- does it really take one to know one--the answer is, at least as a general claim, it's not true.

所以假如我们开始,深入探讨一些例子,到底需不需要同类才能互知 答案是,至少通常来说,这是不需要的

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