种树的最佳时间是20年前，次佳时间是现在。
The best time to plant a tree was 20 years ago. The second best time is now.
"I don't think you can ever do your best. Doing your best is a process of trying to do your best."
To understand just one life, you have to swallow the world.
创新不仅仅是创造新药，更是将药物送到最需要的人手中。