Language is a process of free creation; its laws and principles are fixed, but the manner in which the principles of generation are used is free and infinitely varied.

Understanding the cosmos requires transcending the senses, reaching deeper levels through rational inference and contemplation.

优秀的数学家不是知道所有答案的人，而是能提出正确问题的人。

Responsible forestry is not a choice, it's an obligation for all of us.《Forests of Tomorrow》

舞台是我感觉最有活力的地方。

Safety is not just a priority, it's a value. We must live it every day.