本不固者末必几。行不信者名必耗。
根本不稳固必然会央及枝叶。行为不守信必然会损害声誉。
The most important thing is that you have a North Star. You have to know where you're going.
The problem with socialism is that you eventually run out of other people's money.
The past is a source of knowledge, and the future is a source of hope. Love of the past implies faith in the future.
冒险本身就是值得的。
——〈在香港大学的演说〉(又名〈革命思想之产生〉),1923年2月19日