The golden rule is that there are no golden rules.
如果名分不正理论上便讲不通,理论上讲不通,事情便办不成;……因此,君子给某种事物起名字时,就一定要在理论上讲得通,在实践上就一定能行得通。
The market can stay irrational longer than you can stay solvent.
生活中唯一不变的是变化。