Language and the arts are components of culture, which are integral factors in forging national integration, building peace and resolving conflicts in a complex country like Nigeria. The United Nations Educational, Scientific and Cultural Organisation (UNESCO) 2005 Convention on Protection and Promotion of the Diversity of Cultural Expressions sees cultural diversity, as an "indispensable for peace and security at the local, national and international levels." This underpins the thinking that, there is "strength in cultural diversity". Ideally, educational programmes need to be relevant, practical and comprehensive; while interest and ability should determine the individual's inclination. The National Policy on Education (NPE) states the importance government attaches to language, as a means of promoting social interaction, national cohesion, and preservation of cultures. The policy stipulates compulsory learning of the language of the immediate environment for every child. In the interest of national unity, every child is also required to learn one of the three major Nigerian languages: Hausa, Igbo and Yoruba. This paper examines the situation and amplifies the need for the Nigerian Government to mainstream the country's indigenous languages and the arts in order to impart relevant education to the youth, because as aspects of cultural heritage, they have the prospects of changing its development strategies. It makes salient recommendations, stressing that, it can be realised, if there is political will on the part of government, and patriotic zeal, on the part of the citizens, towards safeguarding the indigenous language and the arts through their reinvigorated use and appreciation.