There is no necessary connection between law and morality.

我不去想过去。唯一重要的是永恒的现在。

"The beauty of computational complexity lies in its ability to classify problems based on their inherent difficulty."

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:

如果你想飞翔，就必须放弃拖累你的东西。