This book was originally part of Smith's and written about religion. I express myself, says Bishop Butler, with caution, lest I should be mistaken to vilify reason, which is, indeed, the only faculty which we have to judge concerning anything, even revelation itself; or be misunderstood to assert that a supposed revelation cannot be proved false from internal characters. The faculty of reason, he says, is the candle of the Lord within us against vilifying which we must be very cautious. The writer has even seen the pastorate of a large parish assumed by one who in private society was an evident rationalist and must have satisfied his conscience by promising to himself that he would do a great deal of social good. The writer as a young student heard Buckland struggling to reconcile geology with Genesis. Now the struggle is to reconcile Genesis with geology. Before this wonderful advance of science and criticism combined, there had been comparatively little of avowed, still less of popular, scepticism. Rousseau was a sentimental theist; Voltaire erected a church to God.