the ignorance of the great mass of them; but is their faith less bigoted, because it is not founded on a regular investigation of the proofs, and is merely an obstinate determination to believe what they have been told and accustomed to believe? Or is it not the same with the doctors of the church and its most learned champions, who read the same texts, turn over the same authorities, and discuss the same knotty points through their whole lives, only to arrive at opposite conclusions? How few are shaken in their opinions, or have the grace to confess it? Shall we then suppose them all impostors, and that they keep up the farce of a system, of which they do not believe a syllable? Far from it: there may be individual instances, but the generality are not only sincere but bigots. Those who are unbelievers and hypocrites scarcely know it themselves, or if a man is not quite a knave, what pains will he not take to make a fool of his reason, that his opinions may tally with his professions? Is there then a Papist and a Protestant understanding--one prepared to receive the doctrine of transubstantiation and the other to reject it? No such thing: but in either case the ground of reason is pre-occupied by passion, habit, example--_the scales are falsified_. Nothing can therefore be more inconsequential than to bring the authority of great names in favour of opinions long established and universally received. Cicero's being a Pagan was no proof in support of the Heathen mythology, but simply of his being born at Rome before the Christian era; though his lurking scepticism on the subject and sneers at the augurs told against it, for this was an acknowledgment drawn from him in spite of a prevailing prejudice. Sir Isaac Newton and Napier of Merchiston both wrote on the _Apocalypse_; but this is neither a ground for a speedy anticipation of the Millennium, nor does it invalidate the doctrine of the gravitation of the planets or the theory of logarithms. One party would borrow the sanction of these great names in support of their wildest and most mystical opinions; others would arraign them of folly and weakness for having attended to such subjects at all. Neither inference is just. It is a simple question of chronology, or of the time when these celebrated mathematicians lived, and of the studies and pursuits which were then chiefly in vogue. The wisest man is the slave of opinion, except on one or two points on which he strikes out a light for himself and holds a torch to the rest of the world. But we are disposed to make it out that all opinions are the result of reason, because they profess to be so; and when they are _right_, that is, when they agree with ours, that there can be no alloy of human frailty or perversity in them; the very strength of our prejudice making it pass for pure reason, and leading us to attribute any deviation from it to bad faith or some unaccountable singularity or infatuation.