My words in her mind: cold polished stones sinking through a quagmire.
The more you dwell in the past, the less you prepare for the future.
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:
有技巧的人劳累，聪明的人忧虑，没有本事的人没有追求。