There was nothing petty or mean in Julius II.; his very faults bore a grandiose and heroic aspect. Turbulent, impatient, inordinate in his ambition, reckless in his choice of means, prolific of immense projects, for which a lifetime would have been too short, he filled the ten years of his pontificate with a din of incoherent deeds and vast schemes half accomplished. Such was the man who called Michelangelo to Rome at the commencement of 1505. Why the sculptor was willing to leave his Cartoon unfinished, and to break his engagement with the Operai del Duomo, remains a mystery. It is said that the illustrious architect, Giuliano da San Gallo, who had worked for Julius while he was cardinal, and was now his principal adviser upon matters of art, suggested to the Pope that Buonarroti could serve him admirably in his ambitious enterprises for the embellishment of the Eternal City. We do not know for certain whether Julius, when he summoned Michelangelo from Florence, had formed the design of engaging him upon a definite piece of work. The first weeks of his residence in Rome are said to have been spent in inactivity, until at last Julius proposed to erect a huge monument of marble for his own tomb.
Thus began the second and longest period of Michelangelo’s art-industry. Henceforth he was destined to labour for a series of Popes, following their whims with distracted energies and a lamentable waste of time. The incompleteness which marks so much of his performance was due to the rapid succession of these imperious masters, each in turn careless about the schemes of his predecessor, and bent on using the artist’s genius for his own profit. It is true that nowhere but in Rome could Michelangelo have received commissions on so vast a scale. Nevertheless we cannot but regret the fate which drove him to consume years of hampered industry upon what Condivi calls “the tragedy of Julius’s tomb,” upon quarrying and road-making for Leo X., upon the abortive plans at S. Lorenzo, and upon architectural and engineering works, which were not strictly within his province.