"We don’t really have to do a perfect job."

"Nobody will be able to tell, though."

"That’s not the point, not the point at all.  The old masters didn't care whether anyone could see their flaws or not.  They wanted to do as well as they could, because their work was a gift to God, who deserved their best.  That’s all gone; now what's important is whether anyone will notice the difference, and how much it will all cost.  It changes the spirit of the building forever."