当你解决一个数学问题时，你不仅得到了答案，还理解了为什么这是答案。

The question of truth and falsehood is always present, but it is not always answerable.

法国人终其一生都在抱怨所有的事。

"We are all alone, born alone, die alone, and—in spite of True Romance magazines—we shall all someday look back on our lives and see that, in spite of our company, we were alone the whole way."