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。
爱是一个战场,但它是一个值得为之奋斗的战场。
Sustainability isn’t just a trend—it’s the foundation of responsible business.
Efficiency is doing things right; effectiveness is doing the right things.
今天种下的每一棵树都是留给明天的遗产。
"The immigrant experience is universal—it's about leaving one home to find another."
判我有罪吧,没关系。历史将宣判我无罪。
音乐是自我的反映。我们只是解释它,然后我们收到支票。
Don't stop believing, unless your dream sucks.