What's the best thing learning foreign languages?
It is, I think, being able to talking to people who use the language in their country. How about math? You can talk to nature with math. It's great to get to know with foreiners, it's wonderful to know about from carbon atom to the Milky Way.
Written languages represent spoken languages, math writes about nature phenomena. Like that the language has the grammer, Math also has some laws (yes, it is little bit bothersome, though).
Math is one of a languages. You can use it all over the world.
How many languages do you "use"?