不要因为它结束了而哭泣，要因为它发生过而微笑。

Certainty of evidence does not lead to certainty of belief.

Not necessarily your mother, or indeed mine, but, as it were, the ideal mother, somebody who doesn't care about your achievements. Unfortunately, most people are not our mothers. Most people make a strict correlation between how much time, and if you like, love -- not romantic love, though that may be something -- but love in general, respect --they are willing to accord us, that will be strictly defined by our position in the social hierarchy.

The only way to get rid of a temptation is to yield to it.

我们不能改变过去，但我们可以改变对过去的看法。

We must balance economic growth with environmental responsibility; they are not mutually exclusive.