Saving Mr. Banks follows the tumultuous relationship between Walt Disney and P.L. Travers as they work to bring the beloved Childrens' novel Mary Poppins to the big screen. About the role of the disgruntled author, Emma Thompson had this to say.
"She's the most difficult person I've ever played. She was a woman of quite eye-watering complexity and contradiction. Often I play people who are controlled by some very clear guiding moral principles. Like Margarete Schlegel [in Howards End], guided by the early principles of feminism and equal rights, and Elinor Dashwood [in Sense and Sensibility], guided by the principles of decency and honor. There are very clear moral prisms these women pour life through, and I understand that very well. And [P.L. Travers] was not like that at all. She was far more chaotic and confused and morally various.
There's a tendency to cast aside a children's author or children's film and make it seem less important than those for an adult audience. Of course, I think it's the other way around. You can get away with dropping the ball from time to time with adult audiences but children know. You've really got to do your best. Letting them down is a serious failure in your artistic integrity."