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:
I am interested in how we see, and how we can represent that seeing.
I have featured and will always continue to feature my name prominently in all my enterprises.
Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.
最伟大的真理是最简单的，最伟大的人也是如此。
The more you know about yourself, the more patience you have for what you see in others.
"We are all so much more than we think we are."