一个好的模型应该在复杂性和准确性之间取得平衡，捕捉基本动态而不过度拟合。

Light is the most important material in architecture.

自信是最好的装扮，展现它并拥有它。

The real prison is not the one made of iron bars, but the one made of fear.

I have great faith in fools； self-confidence， my friends call it.

中心地的等级越高，其数量越少，影响范围越大。