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。
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:
尊敬自己的长辈，从而推广到尊敬别人的长辈；爱护自己的儿女，从而推广到爱护别人的儿女。
我对独特不感兴趣，只对平庸感兴趣。
我们不能改变过去，但我们可以改变对过去的看法。
Writing is a way to confront the things that we are afraid to confront in real life.