Some habits of thought also, that have grown rapidly among educated men, have tended powerfully in the same direction. The sharp contrasts between true and false in matters of theology have been considerably attenuated. The point of view has changed. It is believed that in the history of the world gross and material conceptions of religion have been not only natural, but indispensable, and that it is only by a gradual process of intellectual evolution that the masses of men become prepared for higher and purer conceptions. Superstition and illusion play no small part in holding together the great fabric of society. 'Every falsehood,' it has been said, 'is reduced to a certain malleability by an alloy of truth,' and, on the other hand, truths of the utmost moment are, in certain stages of the world's history, only operative when they are clothed with a vesture of superstition. The Divine Spirit filters down to the human heart through a gross and material medium. And what is true of different stages of human history is not less true of different contemporary strata of knowledge and intelligence. In spite of democratic declamation about the equality of man, it is more and more felt that the same kind of teaching is not good for everyone. Truth, when undiluted, is too strong a medicine for many minds. Some things which a highly cultivated intellect would probably discard, and discard without danger, are essential to the moral being of multitudes. There is in all great religious systems something that is transitory and something that is eternal. Theological interpretations of the phenomena of outward nature which surround and influence us, and mythological narratives which have been handed down to us from a remote, uncritical and superstitious past, may be transformed or discredited; but there are elements in religion which have their roots much less in the reason of man than in his sorrows and his affections, and are the expression of wants, moral appetites and aspirations which are an essential, indestructible part of his nature.