As the original Mary Poppins budget of five million dollars continued to grow, I never saw a sad face around the entire Studio. And this made me nervous. I knew the picture would have to gross 10 million dollars for us to break even. But still there was no negative head-shaking. No prophets of doom. Even Roy was happy. He didn't even ask me to show the unfinished picture to a banker. The horrible thought struck me — suppose the staff had finally conceded that I knew what I was doing.

Statement of 1 October 1966, used in The Walt Disney Story (1973)