中华民国的国家与前清的国家不同，共和国体与专制国体不同。中华民国的国家是吾四万万同胞的国家，前清的国家是满洲一人的国家；共和国体荣辱是吾同胞荣辱，专制政体荣辱是君主一个人的荣辱。
——《在山西实业界学界及各党派欢迎会的演说》（1912年9月20日）
"I can resist everything except temptation."
The present is the past rolled up for action, and the past is the present unrolled for understanding.
过去总在变化，因为我们与它的关系总在改变。
The worst thing in the world that can happen to you if you’re an engineer that has given his life to develop something is for someone to just rip it off.
你能做的最激进的事情就是绝对尊重文脉。