道是神奇玄妙的存在，灵性具足却无形无相，无法预测其来去，也难以追寻其踪迹，不知其所以然而自然如此

困苦受辱不值得忧虑，而自取困辱才值得忧虑。荣耀利益不是真正的快乐，忘掉荣耀利益才是真正的快乐。

The people who are crazy enough to think they can change the world are the ones who do.

"The past is a candle at great distance: too close to let you quit, too far to comfort you."

Technology can be our greatest ally in sustainable forest management.

一本好书是作者与读者之间的对话。