Michelangelo vs. Pope Julius

In the film"The Agony and the Ecstacy" the filmaker focused on the unique relationship between Michelangelo and Pope Julius. Comment on how they "allowed " each other to do what they had to do. What qualities did each possess that made the relationship one that lead to one of the most outstanding artworks ever produced? Especially what foresight did Pope Julius see in Michelangelo that enabled them to work together despite their differences?