The Baháʼí Faith teaches that the world should adopt an international auxiliary language, which people would use in addition to their mother tongue.The aim of this teaching is to improve communication and foster unity among peoples and nations. The Baháʼí teachings state, however, that the international auxiliary language should not suppress existing natural languages, and that the concept of unity in diversity must be applied to preserve cultural distinctions.

‘Abdu’l-Bahá encouraged the adoption of a universal language, saying that it would help create the conditions for world unity:

A mutual language will become the mightiest means toward universal progress, for it will cement the east and the west. It will make the world one home and become the divine impulse for human advancement. It will upraise the standard of oneness of the world of humanity and make the earth a universal commonwealth. It will create love between the children of men and good fellowship between the various creeds.

n order to facilitate complete understanding between all people, a universal auxiliary language will be adopted and in the schools of the future two languages will be taught — the mother tongue and this international auxiliary tongue which will be either one of the existing languages or a new language made up of words from all the languages .