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。

小说是最能捕捉人类复杂性的体裁。

可持续性是水产养殖的未来，我们必须投资于环保技术。

坚持住，成功就在下个路口等你。

I think the most important thing in life is to be honest with yourself.

A man's errors are his portals of discovery.

"The past is a shadow that follows us, but it is also the light that guides us forward."

在没有航海图的海域上航行是需要勇气的。