適當?shù)囊龑且粋€矛盾。
An adequate bootstrap is a contradiction in terms.
在人類社會的初期，每個人都是自私自利的。
【釋義】：禮節(jié)重在相互回應。送出禮遇而對方不回應，這是不合禮數(shù)的；接受了別人的禮遇卻不回報，同樣也是不符合禮的要求。
Singing is 90% listening. You have to listen to the silence too.
The best stock to buy is the one you already own.