Economics is the study of how societies use scarce resources to produce valuable goods and services and distribute them among different individuals. If we think about the definitions， we find two key ideas that run through all of economics:
经济学特别是宏观经济学中说的投资是耐用资本品如厂房设备的生产，而平常说的“投资”是指购买资产如股票，这和经济学中的投资不同，为了区分，这种投资被称为金融投资。
Reading is to the mind what exercise is to the body.
我了解到你不可能取悦每个人，这没关系。
婚姻的快乐完全是机会的问题。
当孩子放在自然环境的环境里，他会显示出自己的能力。
One should not believe or disbelieve， but rather remain in suspense.
我是真正MC的定义。