Consider how difficult it is today to communicate with various nations.

If one studies fifty languages one may yet travel through a country and not know the language.

Therefore I hope that you will make the utmost effort, so that this language of Esperanto may be widely spread.
While these allusions to Esperanto are specific and encouraging, it remains true that until the House of Justice has acted on the matter in accordance with Baha'u'llah's instruction the Baha'i Faith is not committed to Esperanto nor to any other living or artificial tongue.
'Abdu'l-Baha Himself said: "The love and effort put into Esperanto will not be lost, but no one person can construct a Universal Language."-- 'Abdu'l-Baha in London, p.

95.
Which language to adopt, and whether it is to be a natural or constructed one, is a decision which the nations of the world will have to make.
Universal League of Nations Another proposal frequently and powerfully advocated by Baha'u'llah was that a Universal League of Nations should be formed for the maintenance of international peace.

In a letter to Queen Victoria, written while He was still a prisoner in the barracks of Akka,( 29) He said:-- O Rulers of the earth! Be reconciled among yourselves, that ye may need no more armaments save in a measure to safeguard your territories and dominions....
Be united, O Kings of the earth, for thereby will the tempest of discord be stilled amongst you, and your people find rest....
Should any one among you take up arms against another, rise ye all against him, for this is naught but manifest justice.
In 1875, 'Abdu'l-Baha gave a forecast of the establishment of a Universal League of Nations, which is especially interesting at the present time( 30) in view of the strenuous attempts now being made to establish such a league.