Each generation must out of relative obscurity discover its mission, fulfill it, or betray it. In underdeveloped countries the preceding generations have both resisted the work or erosion carried by colonialism and also helped on the maturing of the struggles of today. We must rid ourselves of the habit, now that we are in the thick of the fight, of minimizing the action of our fathers or of feigning incomprehension when considering their silence and passivity. They fought as well as they could, with the arms that they possessed then; and if the echoes of their struggle have not resounded in the international arena, we must realize that the reason for this silence lies less in their lack of heroism than in the fundamentally different international situation of our time. It needed more than one native to say "We've had enough"; more than one peasant rising crushed, more than one demonstration put down before we could today hold our own, certain in our victory. As for we who have decided to break the back of colonialism, our historic mission is to sanction all revolts, all desperate actions, all those abortive attempts drowned in rivers of blood. Page 206, The Wretched of the Earth, Frantz Fanon
That is one use of the quote. Here is how it is used by other revolutionaries. So did Octavian attempt to pass off someone's statement as his own or was he being cute and hoping no one would discover the source of the quote?