Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.
仰望星空，而不是低头看脚。试着理解你所看到的，并思考是什么让宇宙存在。保持好奇心。
If we want to protect forests, we must first understand them.
You must change nothing in your writing without absolute necessity. If it is necessary， then change with simplicity.
The truth of history is often found in its silences.
Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work.
没有根本的气节，就好像醉汉喝醉酒打人，酒醉时很勇敢，酒醒后勇气全消，没有一点气力。没有以学问为根本的见识，就好像厨师在炉灶前面，面前光亮而背后黑暗。