The capital asset pricing model (CAPM) is a useful tool for understanding the risk-return tradeoff, but it is not a perfect description of reality.
资本资产定价模型（CAPM）是理解风险-回报权衡的有用工具，但它并非对现实的完美描述。
The most successful companies don't just sell products—they solve problems.
文章以气势为主，气势的清新或浑浊有其内在规律，不能勉强达到。
Talent is not enough. You need the right attitude.