沉默不是某物的缺失，而是一切的存在。
Silence is not the absence of something but the presence of everything.
The best way to predict the future is to create it.
成功不是终点，失败也不是致命的：重要的是继续前进的勇气。
增长的关键不是物质资本的积累，而是知识的扩展。
Every dollar invested in responsible forestry today grows into a hundred dollars of environmental and economic value tomorrow.
"Books are the way that we communicate with the dead. The way that we learn lessons from those who are no longer with us, that humanity has built on itself, progressed, made knowledge incremental rather than something that has to be relearned, over and over."