I'm not a rapper, I'm a Inca legend.
Your time is limited， so don’t waste it living someone else’s life.
Natural experiments can provide valuable insights into economic questions.
实现明天的唯一限制将是我们今天的疑虑。
广东话谚语
The great powers are always searching for opportunities to gain power at the expense of their rivals, and they will use force if they believe it will bring them strategic advantage.