挑战是伪装的机会；用勇气拥抱它们。
Challenges are opportunities in disguise; embrace them with courage.
在数学中，你不理解事物。你只是习惯它们。
有权势的天子，也未必尊贵；穷苦的平民，也未必低贱。贵贱的分别，在于行为的美恶。
Collaboration across borders is essential—fish don't recognize national boundaries, and neither should our efforts to protect them.
The only way you can write the truth is to assume that what you set down will never be read.