There is nothing capricious about religion. We do not get the soul in different ways, under different laws, from those in which we get the body and the mind. If a man does not exercise his arm, he develops no biceps muscles and if a man does not exercise his soul, he acquires no muscle in his soul, no strength of character, no vigour of moral fibre, nor beauty of spiritual growth. Love is not a thing of enthusiastic emotion. It is a rich, strong, manly, vigorous expression of the whole round Christian character -- the Christ-like nature in its fullest development. And the constituents of this great character are only to be built up by ceaseless practice.

... Henry Drummond, "The Greatest Thing in the World"