The most important thing is to be honest with yourself and your audience.
对失意的人不要谈论得意的事,处于得意的时候不要忘记失意的日子。
The most exciting breakthroughs of the 21st century will not occur because of technology but because of an expanding concept of what it means to be human.
对中国国民党同志共勉,1920年1月1日
变化是不可避免的,但进步是一种选择。