Knowing many languages means having many keys to one lock. Voltaire
Without a knowledge of languages you feel as if you don't have a passport. Anton Chekhov
Some programming languages manage to absorb change, but withstand progress. Alan Perlis
The echo knows all languages. Finnish Proverb
You are as many a person as languages you know. Armenian Proverb
You are so many times a human how many languages you know. Czech Proverb