The metaphysical polity was required to combat the theological; but now it has served its destructive purpose, and tends to become obstructive, for, having destroyed the old, it will not permit the new. Its chief dogma has always been liberty of conscience with the liberty of press and speech which that implies; but liberty of conscience really means little more than absence of intellectual regulation; and even as liberty of conscience is out of the question in astronomy and chemistry, so it is out of the question in social physics. Liberty of conscience and inquiry can only be temporary and transitional, and must be followed by positive decision on the part of those qualified to decide. It cannot be held that every man is competent to form opinions in social and political questions; it cannot be maintained that intellects of weak capacity can judge obscure and complex questions, and that all opinions are equally valuable. All society is based on faith in the opinion of others and in reciprocal confidence. Continual discussion of the foundations of society must render it impossible to lay sure foundations firm, and the disorder produced by free opinions on all points by all people is seen in the fierce and feeble sectarianism of Protestantism. What are the limits of free inquiry we shall see later; meantime, we may note that fine motto of the Catholic Church: "In necessary things, unity; in doubtful things, liberty; and in all things, charity." The second dogma of the metaphysical polity is equality, and, like the other dogma, it must be considered the temporary expression of a temporary need. It is indeed a corollary of the dogma of liberty of conscience; for to assume liberty of conscience without equality of intelligence would be to stultify the assumption. Having achieved its purpose, it also became an obstacle in the path of progress. Equality sufficient to permit a man to use his faculties aright is allowed by all; but men cannot be made equal physically, and much less can they be made equal intellectually and morally. The dogma of liberty of conscience and equality resulted naturally in a third dogma, the sovereignty of the people. This also was provisionally useful, in that it permitted a series of political experiments; but it is in essence revolutionary, condemning the superior to be ruled by the inferior. A fourth dogma, the dogma of national independence, has also been serviceable in separating the nations in preparation for a new union.