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We say of some things that they can't be forgiven, or that we will never forgive ourselves. But we do—we do it all the time.

The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?

沒有大膽的猜測(cè)，就沒有偉大的發(fā)現(xiàn)。

即使學(xué)術(shù)再精湛，如果道德不足，就像在流沙上建造高樓，稍有震動(dòng)就會(huì)倒塌。