选择朋友要慢，改换朋友要更慢。

There can be no permanent progress in the battle against hunger until the agencies that fight for increased food production and those that fight for population control unite in a common effort.

一个人越讲述他的故事，他就越成为他的故事。

Good can exist without evil， whereas evil cannot exist without good.

要做出不错的东西，要大胆去做它。要想做出好的东西，需要一次又一次去做。做好东西的秘诀在于重新去做。

预测未来最可靠的方法就是去创造未来。