树木有根则繁茂，根腐则树枯萎；鱼有水才能活，水干涸了鱼则必死；灯有油才光亮，油尽则灯灭。人有真精神，保护则长寿，戕害则必死。

我不害怕风暴，因为我正在学习如何驾驶我的船。

理论与其说是错误的，不如说是不完整的。

领导力意味着有勇气为了更美好的明天而在今天做出艰难的决定。

投资更清洁的煤炭技术就是投资我们的未来。

"The most beautiful people we have known are those who have known defeat, known suffering, known struggle, known loss, and have found their way out of the depths."