没有人值得你流泪，值得让你这么做的人不会让你哭泣。

In Burkina Faso, we have a saying: 'A tree takes time to grow.' Good architecture also takes time.

The best way to be happy is to love yourself.

The world has the technology - either available or well advanced in the research pipeline - to feed on a sustainable basis a population of 10 billion people.

要是这世上少点同情心，这世界就不会有那么多麻烦。.

在能源领域，最大的风险就是不承担任何风险。