Baháʼu'lláh stressed, however, that the auxiliary language should not suppress existing natural languages, and that the concept of "unity in diversity" must be applied to languages. The Baháʼí teachings state that cultural heterogeneity is compatible with unity, and that at the present time in the history of humankind, the Baháʼí teaching of unity requires the embracing of cultural diversity since humanity is enriched by the various cultures throughout the world. The Baháʼí teachings also state that having an international auxiliary language would remove the pressure from the natural aggrandizement of majority language groups and thus preserve minority languages, since each person would keep their own mother-tongue, and thus minority cultures.