促进民主的最有效方式不是通过军事干预，而是通过建立制度和促进经济发展的缓慢而稳定的过程。
The most effective way to promote democracy is not through military intervention but through the slow and steady process of building institutions and promoting economic development.
In the world of mathematics, imagination is more important than knowledge.
我们都只是过客，像沙滩上的脚印一样留下自己的痕迹。
梦想是变革的种子。没有种子，什么都不会生长；没有梦想，什么都不会改变。
The essence of power is not in its strength, but in its ability to influence.
相关系数的可能误差不是可以从第一原理推导出来的东西，而是必须通过经验找到的。