According to this article published in The Economist:
“A second language expands the number of people you can talk to. It adds to the ways you can say things, and so offers a second point of view on the whole business of expression. Bilingualism may help you understand other people; one study found that bilingual children are better at grasping other perspectives, perhaps because they are always keeping track of who speaks what, a regular reminder that everyone is different. Finally, speaking a second language less well than your first supplies another kind of useful practice: it is a constant exercise in humility.”
https://www.economist.com/books-and-arts/2020/02/29/the-advantages-of-speaking-a-second-language
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