Political slogans can be historically concrete despite appearing abstract later

Evidence

It is necessary to insist, against a tendentious and fundamentally anti-historical school of thought, that the Jacobins were realists of the Machiavelli stamp and not abstract dreamers. They were convinced of the absolute truth of their slogans about equality, fraternity and liberty, and, what is more important, the great popular masses whom the Jacobins stirred up and drew into the struggle were also convinced of their truth. The Jacobins’ language, their ideology, their methods of action reflected perfectly the exigencies of the epoch, even if “today”, in a different situation and after more than a century of cultural evolution, they may appear “abstract” and “frenetic”. — Antonio Gramsci, Selections from the Prison Notebooks, 474

Categorization

Category: Causal Relationships

• QUESTION: How does this historical-concreteness claim for ideology map onto how he assesses nationalist ideologies later?