Any one would tell you English is the most important one to communicate with the world.
However, language is more than communication.
Language is also a skill to think.
Chinese language has more connections with the right brain. It's a direct link to the thought through symbols. Though the connections are in many ways still unknown, but it is definitely different from English, which is more sequential and works in a linear manner more than Chinese.
English is the most important language now. Chinese would be more useful for serious thinkers in the future.
9053 Which is the most important language 20170321