Various studies on the National Policy on Education (NPE) have concentrated on the cognitive value of pedagogy and learning of the language aspect but few have viewed its importance on the togetherness of the nation - Nigeria. This paper deals with how the language policy can influence and ensure the co-existence of Nigeria in achieving self-actualisation, national unity, social, cultural, economic, and educational advancement for collective benefit. It also reveals that, the language aspect of the NPE is also providing sustainable attempts using the three major languages in Nigeria – Hausa, Igbo, and Yoruba - and English language as well. The paper suggests that, the language policy can be used to foster a desirable and the real Nigerianism philosophy of our forefathers. It moreover concludes and recommends that, Nigeria leaders should exhibit patriotism; shun the (audible and bodily) language of disintegration and division for the sake of national unity.