A woman's guess is much more accurate than a man's certainty.

The history of mathematics is a history of human thought and progress.

我们需要一个更主权、更团结、更民主的欧洲。

我和我的墙纸即将展开生死决斗，所以我们中的一个必须得走。

Don‘t cry because it is over， smile because it happened。

The human voice is the most beautiful instrument of all, and the most difficult to play.

未经审视的生活不值得过。