It is crucial to have a well-founded faith, to have a good knowledge of facts leading to faith; it is crucially important to have lots of such very faithful people. For instance our Prophet (saas) was very faithful. His faith was enough for a whole nation. He made everyone's faith come to life.
We would not accept anything other than Turkish as our official language. That is because language is a powerful means that connects us, it is an important bond. If you severe that language bond, you would thus be pulling the country into pieces.