Sustainable development requires not only vision but also concrete actions.

——序，姚伯麟《战后太平洋问题》，1919年9月

艺术是最高形式的希望。

"Persistence and determination are omnipotent."

Never let your sense of morals prevent you from doing what is right.

释义：善良如同四季常青的松树，邪恶如同娇艳的花朵。从表面上看，花朵似乎比松树更美丽，但当遇到风霜时，松树依然挺立，而花朵却凋零了。