Написать эссе"Do we need auxiliary languages?"

I think that we need auxiliary languages. I think that a person should not know many auxiliary languages. I think that a person should know the language of international communication, namely English. I believe that a person should also know the language of the locality where he lives. A person can learn many other languages, but this is usually done by linguists. I believe that it is better for a person to engage in his profession than to waste time learning a multitude of languages that may not be useful in the work.