Rome seemed as powerful and stable as ever. But below the surface the foundations were cracking, and through the fissures new ideas and new institutions were thrusting themselves. The cities are everywhere in decline; trade, industry, and agriculture bend under the weight of taxation. Communications are less safe, and some provinces are infested with marauders, peasants who can no longer earn a living on the land.
Churchill describes a society that appears stable while its underlying institutions are weakening. Rome still seemed powerful, but declining cities, heavier taxation, reduced trade and agricultural difficulties suggested deeper economic and administrative problems. His contrast between outward strength and internal deterioration emphasises that political decline may begin before it becomes obvious in formal institutions or military power.
The passage also connects economic hardship with social and political instability. Unsafe communications, struggling provinces and displaced peasants are presented as signs that the state was becoming less able to maintain order and prosperity. At the same time, Churchill notes that new ideas and institutions were emerging through the weakening structures of the old system. More broadly, the quotation illustrates how established powers can retain an appearance of permanence even while economic strain and institutional change are reshaping the society beneath them.