"Marxism-Leninism considers all questions in their historical settings. Marxism-Leninists view bourgeois nationalism under the given historical conditions. Drawing a distinction between its different objective roles, they decide what different attitudes the proletariat should take toward it. In the early period of capitalism, the national movement led by the bourgeoisie had as its objective the struggle against oppression by other nations and the creation of a national state. This national movement was historically progressive, and the proletariat supported it. In the present period, such bourgeois nationalism still exists in the colonial and semi-colonial countries. This variety of nationalism also has a certain objective progressive historical significance."
January 1, 1970
https://en.wikiquote.org/wiki/Liu_Shaoqi