只有向后看才能理解生活；但要生活好，则必须向前看。
Life can only be understood backwards；but it must be lived forwards.
如果没有冬天的寒冷来赋予它甜蜜，夏天的温暖又有什么意义呢？
Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws.
幸福不是现成的，它来自于你自己的行动。
文明的分布很大程度上是气候的问题。