——《在广州岭南学生欢迎会的演说》（1923年12月21日）

True scientific progress requires both creativity and discipline.

书籍是最安静且最恒久的朋友。

The most important object of both the workmen and the management should be the training and development of each individual in the establishment.

每一笔巨大的财富背后都隐藏着罪行。

What we have to remember is that we can still do anything. We can change our minds. We can start over.