市场是一个永远在不可持续的乐观（使股票过于昂贵）和不合理的悲观（使股票过于便宜）之间摇摆的钟摆。聪明的投资者是现实主义者，他们向乐观主义者出售并从悲观主义者那里购买。

For those who do return back to the countryside, they find themselves very welcome locally, because with the knowledge, skills and networks they have learned in the cities, with the assistance of the Internet, they're able to create more jobs, upgrade local agriculture and create new business in the less developed market.

Behavior, as such, is not to be regarded as a mere chain of muscular contractions, but rather as a purposive and cognitive affair.