一个理论最重要的在于其预测的有效性，而非其美学吸引力。

I define nothing. Not beauty, not patriotism. I take each as it comes, and I leave it as it goes.

I have made a ceaseless effort not to ridicule， not to bewail， not to scorn human actions， but to understand them.

中心地的等级越高，其服务的区域越大，此类中心地的数量越少。

孔子说：“见到贤人，要向他看齐；见到不贤，要反省自己。”

The key to success is to focus on the long term and not get distracted by short-term fluctuations.

But I love her. She could fade and wither， how can； but I just look at her， all the tenderness， Chung on the heart.

应对过去的唯一方法就是直面它。