自然法则不仅仅是被观察到的，而是观察者与被观察者之间相互作用的结果。

Belief + Doubt = Sanity.

The answer, my friend, is blowin' in the wind.

The old believe everything, the middle-aged suspect everything, the young know everything.

我也没有像鸟禽一般地歌唱，我只静静地微笑，笑我自己幸福无涯。