——〈在香港大学的演说〉（又名〈革命思想之产生〉），1923年2月19日

每个人都会做自己认为正确的事情。

The whole conviction of my life now rests upon the belief that loneliness, far from being a rare and curious phenomenon, peculiar to myself and to a few other solitary men, is the central and inevitable fact of human existence.