在桂林学界迎会的演说，1922年1月22日

采石业的创新不仅关乎机械，还关乎远见和可持续性。

let everyone else call your idea crazy, just keep going, don't stop, don't even think about stopping until you get there, and don't give much think of where "there" is.

言语得当，是智慧的表现；沉默得当，也是智的表现。