The language and ideology of Nasz Dziennik has been compared to the pre-World War II National Democracy (Endecja) movement, which advocated an exclusionary definition of "Polishness" as associated with Catholicism. Nasz Dziennik also frequently refers to the "Poles' Five Truths", a canon of national values first formulated in the late 1930s and cited by present-day Polish nationalists, which include the statement that "Our ancestors' faith is the faith of our children".
Nasz Dziennik's language and ideology have been likened to those of the pre-World War II National Democracy (Endecja) movement, which advocated a narrow definition of "Polishness" tied to Catholicism. Nasz Dziennik frequently discusses the "Poles' Five Truths", a collection of national values formulated in the late 1930s and referenced by modern Polish nationalists, such as the claim that "Our ancestors' faith is our children's faith".