自由的代价是永远保持警惕。
The price of freedom is eternal vigilance.
市场奖励那些有耐心和纪律的人。
The world is so unpredictable. Things happen suddenly, unexpectedly. We want to feel we are in control of our own existence.
最好的想法往往来自那些最接近问题的人。
The concept of legal validity is crucial for understanding the nature of law.