It was then as a sculptor that Michael Angelo first appears to the historical student,--about the year 1492, when Columbus was crossing the great unknown ocean to realize his belief in a western passage to India. Thus commercial enterprise began with the revival of art, and was destined never to be separated in its alliance with it, since commerce brings wealth, and wealth seeks to ornament the palaces and gardens which it has created or purchased. The sculptor's art was not born until piety had already edifices in which to worship God, or pride the monuments in which it sought the glories of a name; but it made rapid progress as wealth increased and taste became refined; as the need was felt for ornaments and symbols to adorn naked walls and empty spaces, especially statuary, grouped or single, of men or animals,--a marble history to interpret or reproduce consecrated associations. Churches might do without them; the glass stained in every color of the rainbow, the altar shining with gold and silver and precious stones, the pillars multiplied and diversified, and rich in foliated circles, mullions, mouldings, groins, and bosses, and bearing aloft the arched and ponderous roof,--one scene of dazzling magnificence,--these could do without them; but the palaces and halls and houses of the rich required the image of man,--and of man not emaciated and worn and monstrous, but of man as he appeared to the classical Greeks, in the perfection of form and physical beauty. So the artists who arose with the revival of commerce, with the multiplication of human wants and the study of antiquity, sought to restore the buried statues with the long-neglected literature and laws. It was in sculptured marbles that enthusiasm was most marked. These were found in abundance in various parts of Italy whenever the vast débris of the ancient magnificence was removed, and were universally admired and prized by popes, cardinals, and princes, and formed the nucleus of great museums.