The best ideas come from frustration with the status quo.

Sometimes it seems as if there are more solutions than problems. On closer scrutiny, it turns out that many of today's problems are a result of yesterday's solutions.

If we don't believe in freedom of expression for people we despise, we don't believe in it at all.

煤炭的未来取决于经济增长与环境保护之间的平衡。