I am fascinated by people who know many languages!  Do you speak many languages?
  multilingualism is the use of more than one language 
How many languages can a person learn?
Multilingualism
Multilingualism is the use of more than one language, either by an individual speaker or by a group of speakers. It is believed that multilingual speakers outnumber monolingual speakers in the world's population. More than half of all Europeans claim to speak at least one language other than their mother tongue; but many read and write in one language. Always useful to traders, multilingualism is advantageous for people wanting to participate in globalization and cultural openness. Owing to the ease of access to information facilitated by the Internet, individuals
other women with whom the child has daily contact, and perhaps still others. However, everyone in the community is interested in language-learning so most people can speak most of the languages. 
Multilingualism is taken for granted, and moving from one language to another in the course of a single conversation is very common. In fact, multilingualism is so usual that the Tucano are hardly conscious that they do speak different languages as they shift easily from one to another. They cannot readily tell an outsider how many languages