时间总是一个惊喜。你以为你了解它，但其实你并不了解。
"Time is always a surprise. You think you know it, but you don't."
It requires indeed some courage to undertake a labor of such far-reaching extent.
过去是一个异国他乡；他们在那里行事不同。
What can be said at all can be said clearly; and whereof one cannot speak thereof one must be silent.
理解心智的功能就像绘制星图——模式揭示目的。