在科学中，唯一不变的就是变化。

The best stories are those that make you question everything.

No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.

"The more you give, the more you get."

A shortage is a sign that somebody is keeping the price artificially lower than it would be if supply and demand were allowed to operate freely.