Andhra Pradesh Chief Minister Chandrababu Naidu today struck a conciliatory note amid the raging language row, saying Hindi and English both have their uses and should be learnt. "One should give importance to the mother tongue, but at the same time, one needs to learn Hindi as it is useful for communication in Delhi. Other languages we learn for livelihood... Hindi is the national language...English is international language," he said, pointing out that Indians are now travelling abroad extensively for work.