(...) He says he thinks that it is good that the Obama administration is seeking to get firsthand knowledge of the effects that the war against terrorism is causing the U.S.ally.

VOA: standard.2009.10.30

One question is this: Is it really true that in order to think about the perfectly straight, I must have somehow, somewhere at some point come up against, had direct knowledge of, the perfectly straight?

一个问题是,难道真的说,为了想象一条完美的直线,我必须,在某处直接碰到,并直接了解一条完美的直线吗

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