In this speck of a world, the heavenly universe manifests the greatest interest.... Yet we come in contact with the busy activity of our cities, we mingle with the multitude in the crowded thoroughfares, we enter marts of trade and walk the streets; and through all, from morning till evening, the people act as if business, sport, and pleasure were all there is to life,—as if this world were all there is to occupy the mind. How few contemplate the unseen agencies!