The only thing necessary for the triumph of evil is for good men to do nothing.

There is nothing either good or bad, but thinking makes it so.

未来可以通过现在的行动改变。

可持续发展不再是选择；它是当今世界生存的必要条件。

No, not rich. I am a poor man with money, which is not the same thing.

Investing in cleaner coal technologies is investing in our planet's future.

最可持续的建筑是用户喜爱和维护的建筑。