Brobdingnag is a practical, moral utopia. Among the Brobdingnagians, there is goodwill and calm virtue. Their laws encourage charity. Yet they are, underneath, just men who labor under every disadvantage to which man is heir. They are physically ugly when magnified, but they are morally beautiful. We cannot reject them simply because Gulliver describes them as physically gross. If we reject them, we become even more conscious of an ordinary person's verminous morality.
In Books I and II, Swift directs his satire more toward individual targets than firing broadside at abstract concepts. In Book I, he is primarily concerned with Whig politics and politicians rather than with the abstract politician; in Book II, he elects to reprove immoral Englishmen rather than abstract immorality. In Book III, Swift's target is somewhat abstract — pride in reason — but he also singles out and censures a group of his contemporaries whom he believed to be particularly depraved in their exaltation of reason. He attacks his old enemies, the Moderns, and their satellites, the Deists and rationalists. In opposition to their credos, Swift believed that people were capable of reasoning, but that they were far from being fully rational. For the record, it should probably be mentioned that Swift was not alone in denouncing this clique of people. The objects of Swift's indignation had also aroused the rage of Pope, Arbuthnot, Dryden, and most of the orthodox theologians of the Augustan Age.
This love of reason that Swift criticizes derived from the rationalism of the seventeenth and eighteenth centuries. John Locke's theories of natural religion were popularly read, as were Descartes' theories about the use of reason. Then a loosely connected group summarized these opinions, plus others, and a cult was born: They called themselves the Deists.
In general, the Deists believed that people could reason, observe the universe accurately, and perceive axioms intuitively. With these faculties, people could then arrive at religious truth; they did not need biblical revelation. Orthodox theology has always made reason dependent on God and morality, but the Deists refuted this notion. They attacked revealed religion, saying that if reason can support the God described by the Bible, it may also conclude that God is quite different from the biblical God. The answer depends upon which observations and axioms the reasoner chooses to use.
