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:

To live is to be marked.

You can't control who loves you, but you can control who you love.

最好的音乐来自最黑暗的地方。

The most important thing is to preserve capital.

It's not whether you're right or wrong that's important, but how much money you make when you're right and how much you lose when you're wrong.