I would like to guess that it has been quoted hundreds of times over the years, maybe e en to you numerous times, so why has no one paid attention to it to date, would be the more applicable question.
Regards Tony
Let me guess... the baby steps are first go to a Baha'i meeting and hear what the Baha'i Faith is all about. Then read some books about the Baha'i Faith. After learning about it, then a person should sign a declaration card and join the Baha'i Faith. Then, after learning more, tell others about the Baha'i Faith. Even hold meetings yourself.
At some point the world is going to realize, "Hey, these Baha'is have some good ideas. Why don't we incorporate some of them into our society." All people would believe that all people are one. That all races are one. That all religions are one. Then the people of the world would think, "Hey, why don't we elect a world tribunal that acts as arbitrators between nation that have disagreement. And we will have a world police force to make sure that the nations abide by the rulings. Also, as the Baha'i Faith teaches, if one nation tries to cause trouble, all the other nations should rise up and put down that nation. Of course, all nations will follow the Baha'i recommendation to disarm, except for just a few weapons to maintain order within its borders."
After some time, it becomes apparent that something more is needed. The last step in the plan is for all the world to live in peace and happiness under one religion. All people will be living by and being obedient to the laws of God as taught by the Baha'i Faith. It will be the "most" great peace.
I doubt if you'll like the way I summarized the Baha'i plan, but if you don't... why aren't Baha'is telling us the complete plan that Baha'is have for the world? Instead of just trying to get bits and pieces of their plan, like the "oneness" of humanity taught in schools. Let me add more... The Baha'i Faith believes it is the only way for the world to get to a place where it can live in peace. Jesus is not coming. Krishna, as the Kalki Avatar, is not coming. The Messiah is not coming. Baha'is believe he has already come, and their prophet, Baha'u'llah is the one. He, Baha'is believe, is the one promised to come by all religions. He is the one that has the truth from God for this day and age. No one else, can fix the problems of the world.