我总是等机会错过了才发现我曾有过机会。
I was seldom able to see an opportunity until it had ceased to be one.
L'avenir, c'est l'éternité plus un jour.
The joy of mathematics comes from the act of creation, not just the result.
To develop, enterprises must be rooted in real industry and down-to-earth.
思想开阔，才能包容天下的千山万壑；思想谦虚，才能接受天下的真知大德；思想平明，才能纵论天下的善恶得失；思想深沉，才能讨论天下的学说哲理；思想稳定，才能应付天下的风云变幻。
"We are all prisoners of our own choices, but we are also the architects of our own freedom."