The main thing the Academy does is to help the purity , strength , and greatness of the Swedish language '' ( `` Svenska SprÃ kets renhet , styrka och hÃ ghet '' ) . The primary purpose of the Academy is to further the `` purity , strength , and sublimity of the Swedish language '' ( `` Svenska SprÃ kets renhet , styrka och hÃ ghet '' ) ( Walshe , 1965 ) .