Trend-following is not such a good model. It’s simply eroded. Things change and being able to adjust is what made Mr. Simons so successful. “Statistic predictor signals erode over the next several years； it can be five years or 10 years. You have to keep coming up with new things because the market is against us. If you don’t keep getting better， you’re going to do worse.

全球金融危机是现代历史上最严重的危机，需要采取非同寻常的应对措施。

生命的轨迹始于无始的境域，变化形成于相互依存的场所。

可持续发展不是减少伤害，而是创造更多益处。

It is absurd to say that we have a duty to be benefited.

认证不是终点，而是负责任林业的起点。