 The 1978 Constitution specifies Spanish as the official language of the State and declares that "all Spaniards have the duty to know it and the right to use it".It goes on to state that other Spanish languages shall also be official within their respective Autonomous Communities as laid down in their Statutes of Autonomy.This provision has been criticised as a "territoriality principle", conflicting with the "personality principle" underlying the right to use Spanish anywhere in Spain.