Nation and liberty: two ideas that in spite of the innumerable works that have been devoted to them are still open to new approaches, indeed, to new definitions. They pose a problem whose essence is to remain without a definitive answer, to be always actual, because it concerns man of all times, all countries and all conditions. This apparently-simple remark raises a question: is it possible to put nation and liberty on the same level? It is permissible to consider liberty and nation as a pair forming a new concept, or do we simply have a relationship located in a precise time at a given place?