...We have formerly commanded, in the Tablets, that the trustees of the House of Justice must select one tongue out of the present languages, or a new language, and likewise select one among the various writings and teach them in the schools of the world, so that the whole world may thereby be considered as one native land and one part...

Bahá'u'lláh

...Baha'u'llah has proclaimed the adoption of a universal language. A language shall be agreed upon by which unity will be established in the world. Each person will require training in two languages: his native tongue and the universal auxiliary form of speech. This will facilitate intercommunication and dispel the misunderstandings which the barriers of language have occasioned in the world...

'Abdu'l-Bahá