The nation that destroys its soil destroys itself.
破坏其土壤的国家就是自取灭亡。
生活就是当你忙于制定其他计划时所发生的一切。
The best time to plant a tree was 20 years ago. The second best time is now.
The advancement of mathematics is due to those who are driven not by the desire for application but by the joy of discovery.
The best way to find the truth is to follow the evidence wherever it leads.
The strongest weapon you have is your mind. Train it well.