真正的挑战是让复杂的东西看起来简单。

Success is not final, failure is not fatal: It is the courage to continue that counts.

I don't like debt. Companies with a lot of debt are riskier.

Psychology must always ask: How does this help the organism live?

自然法的最低内容是任何法律体系所必需的。

欲寻珍珠者，必潜至深处。