"Strengthening the unity of all the nationalities and ethnic groups is a task of great strategic importance that is decisive for the fate of the revolution in our country. We must, therefore, pay more attention to the national question, regard work with different nationalities and ethnic groups as being of crucial importance and take the national question into account in every sphere of activity. Effective steps must be taken to raise the level of political and ideological work among the various nationalities and ethnic groups and to improve education, cultural facilities, medical services, develop production and raise the living standards for the different national groups."
January 1, 1970
https://en.wikiquote.org/wiki/Kaysone_Phomvihane