Why do we need to improve our language skills?

We need to improve our language skill because it can help us develop or create new thoughts.

Our brain can be compared to a hardware of a computer. To fully utilize the computer, a good software is needed. The software can help produce useful outputs, such as good ideas and creative thinking. In fact, a high command of language can act like a good software, it can help produce good output.

Thus, improving language skill can help upgrade our brain software, i.e. our command of language.
The good command of language can then help us communicate well with others in our daily life. The more we communicate with others, the better language command we will have.

This results in developing a better thinking and new thoughts.