This is also a point of the highest importance to insist upon.

Had he been other than he was--a gregarious man, contented with the _a peu pres_ in art--he might have sent out all those twelve Apostles for the Duomo from his workshop.

Raffaello would have done so; indeed, the work which bears his name in Rome could not have existed except under these conditions.
Now nothing is left to us of the twelve Apostles except a rough-hewn sketch of S.Matthew.Michelangelo was unwilling or unable to organise a band of craftsmen fairly interpretative of his manner.

When his own hand failed, or when he lost the passion for his labour, he left the thing unfinished.

And much of this incompleteness in his life-work seems to me due to his being what I called a dreamer.