經(jīng)濟學(xué)特別是宏觀經(jīng)濟學(xué)中說的投資是耐用資本品如廠房設(shè)備的生產(chǎn)，而平常說的“投資”是指購買資產(chǎn)如股票，這和經(jīng)濟學(xué)中的投資不同，為了區(qū)分，這種投資被稱為金融投資。
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:
And America, too, is a delusion, the grandest one of all.
In transgressing the law of nature, the offender declares himself to live by another rule than that of reason and common equity.
海洋養(yǎng)育了數(shù)十億人，我們有責(zé)任確保它在未來幾個世紀(jì)繼續(xù)這樣做。
不成熟狀態(tài)就是不經(jīng)別人的引導(dǎo)就無力運用自己的理智。