That is very much the sentiment behind the Esperanto movement. Though that was proposed as a standardized second language, to be learned alongside whatever loca

That is very much the sentiment behind the Esperanto movement. Though that was proposed as a standardized second language, to be learned alongside whatever local languages were already being learned by the local population. The Esperanto crowd is a cool community, but uptake has been much slower than would be necessary for it to have the desired effectiveness.