抑郁症是最能体现当前意识形态时刻的状况。
旅程本身就是一个人；没有两个是相同的。所有的计划、保障、监管和强制都是徒劳的。经过多年的奋斗，我们发现我们没有去旅行；旅行带走了我们。
数学中的发现过程往往比结果本身更重要。
The work of art is a trace of the eternal.
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
Certification schemes are the grammar of responsible forestry—they give structure to our good intentions.
Sustainability is no longer an option; it's a necessity for survival.
One must not cheat anyone, not even the world of its triumph.