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。
"You can’t just sit down and write a book. That’s not how books get written. Books get written by living your life, by being open to the world, by paying attention."