Maira Kalman is the illustrator of The Elements of Style by William Strunk Jr., and author of And the Pursuit of Happiness and The Principles of Uncertainty. Her latest book, My Favorite Things (HarperCollins, October 2014), is a beautiful pictorial and narrative exploration of the significance of objects in our lives, drawn from her personal artifacts, recollections, and selections from the collection of the Cooper-Hewitt, National Design Museum. Hear her thoughts on what it means to be an optimist, the importance of taking a walk, and her Proust book group.