科学的进步不仅通过知识的积累来衡量,还通过提出新问题的能力来衡量。
The best way to predict the future is to create it.
The key is to set realistic customer expectations, and then not to just meet them, but to exceed them — preferably in unexpected and helpful ways.
No president who performs his duties faithfully and conscientiously can have any leisure.
最大的风险是根本不承担任何风险。