当且仅当所有投资者都持有均值-方差有效的投资组合时，市场组合才是有效的。

活着就是被标记。

过度捕捞是一个可以解决的问题，但它需要全球的承诺和地方的行动。

一个不重视知识分子的社会注定会失败。

音乐是我的日记，记录着我的生活。

伤口是光进入你内心的地方。

Watch your thoughts, for they become words. Watch your words, for they become actions. Watch your actions, for they become habits. Watch your habits, for they become your character. And watch your character, for it becomes your destiny. What we think, we become.

可持续林业不仅仅是砍伐树木，更是确保未来有森林可供珍惜。