一棵树的真正价值是用几十年衡量的，而不是美元。

The history of philosophy is not, like the history of the sciences, to be considered as a mere chronological record of discoveries and errors. It is the history of the human spirit in its endeavor to understand itself and its relation to the universe.

医学的进步不仅仅是技术问题，更是人性的体现。

预测未来的最好方法就是创造未来。

强调持续进步的重要性。