解释：要量力而行，实力达得到就进攻，达不到就撤退。
If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.
We have three criteria. If it’s publicly traded， liquid and amenable to modeling， we trade it.
写作就是重写。
在孩子身上获得最好的收获，请只花你预算的一半的钱，但花双倍的时间陪伴他们。