The human race has many languages. Every language is our language, every language is the language of all of us. In spite of the fact that all languages of the world stand on an equal footing, a common language for the convenient exchange of thoughts between people of different parts of the globe will have to be selected open heartedly as the lingua franca of the world. So long as the world government is not vested with full administrative control over the entire world, local governments in different parts of the world may at their convenience accept the world language or any other local language as their official language. No matter what language is accepted as the official language of the state by any particular government, there should not be any slackness in facilitating the study of the world language.
All languages are subject to birth and death.
Although English is at present an international language, it may not enjoy the same status for an indefinite period. In any particular age only that language which will have the maximum use in different parts of the world will be the lingua franca of the world. The human race has only one culture. I am not prepared to admit that there are various cultures. These local variations in customs and behaviour should not be considered as cultural differences.