民族即民有也，天下者，天下人之天下，非一二人所可独占。民权即民治也，从前之天下，在专制时代，则以官僚武人治之，本总理则谓人人皆应有治之之责，亦应负治之之责，故余极主张以民治天下。民生即民享也，天下既为人人所共有，则天下之利权，自当为天下人人所共享。
〈党员须宣传革命主义〉，在梧州对国民党员的演说，1921年10月29日至11月15日间
The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.
A moment is sucked away, distorted, is no longer itself, has lost its body, has abandoned its soul.
新闻的力量是巨大的，但必须负责任地使用。
地球不是一个刚体，而是一个动态系统，其中对流起着基本作用。
宇宙越是显得可理解，也就越是显得无意义。
I think we have been through a period where too many people have been given to understand that if they have a problem, it's the government's job to cope with it. 'I have a problem, I'll get a grant.' 'I'm homeless, the government must house me.' They're casting their problem on society. And, you know, there is no such thing as society. There are individual men and women, and there are families. And no government can do anything except through people, and people must look to themselves first. It's our duty to look after ourselves and then, also to look after our neighbour. People have got the entitlements too much in mind, without the obligations.