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。
Thought is the most difficult task, which is why so few engage in it.
真正的领导力意味着今天做出艰难的决定,这将使子孙后代受益。
我嘅音乐系我嘅灵魂,冇音乐我唔系完整嘅我。