Creativity requires the courage to let go of certainties.

Knowledge has value only insofar as it contributes to the liberation of humanity.

任何牺牲基本自由以换取短暂安全的人，最后既得不到安全也得不到自由。

Innovation in forestry isn't about replacing nature, but enhancing our partnership with it.《The Green Leadership》

实现真正成功的唯一方法是为他人创造价值。

唯一真正的快乐是创造的快乐。