在桂林学界迎会的演说，1922年1月22日

The true discovery of America is before us. The true fulfillment of our spirit, of our people, of our mighty and immortal land, is yet to come.

The past is a foreign country; they do things differently there.

繁荣的森林证明了自然的恢复力和人类的守护。

技术本身没有价值，只有应用到实际生活中才有价值。