世界是你内心的投射。你抱怨生活不公，往往是因为内心失衡；你觉得世界美好，是因为你心中有光。改变心态，就能改变你看世界的角度。
房间的神秘在于光的游戏。
自然界没有废物——每样东西都是其他事物的养分。
A mathematician's work is never done; there are always new questions to explore and new mysteries to uncover.
Innovation in forestry means finding ways to do more with less.