资本资产定价模型并非旨在成为资本市场的实证均衡理论，而是一种规范性理论，描述如果投资者以某种方式行事，价格应如何表现。

教育不仅仅是往头脑里填塞事实，而是点燃好奇心和批判性思维的火花。

The best leaders are those who listen more than they speak.

The concept of NP-completeness has provided a powerful tool for understanding the complexity of problems.

最令人兴奋的突破往往来自意想不到的地方。