How many languages should be taught or learned? Every member should strive to be bi-lingual or better. To speak another language is to learn another culture, to speak properly is to understand the mindset of a people and the no doubt necessary time abroad to master all this will be a life changing experience. Also this helps in translating the studies, lessons and content of the community and would increase the ability of the community to spread to other countries without massive language barrier issues. The type and diversity of languages that be learned are immense. English, Chinese, Russian and Spanish are 4 of the most important. Especially a high level of English because, for the moment at least, it is incredibly widely spoken as the worlds second language in science, engineering and software development.