The real tragedy of the poor is that they can afford nothing but self-denial.
穷人的真正悲剧是他们除了自我否定外什么都负担不起。
Sustainability isn't a trend—it's our responsibility to the next generation.
Education does not take root in the soul unless it goes deep.
The power of a man, is his present means, to obtain some future apparent good.
我们开采的每一桶石油都必须以最小的环境影响负责任地进行。