The Principles of Uncertainty by Maira Kalman (2007)

A lovely little sketchbook of a book by the artist Maira Kalman. Each page features a drawing or photograph and some small, quiet musing. Somewhat memoir, somewhat philosophy, but lovely and an excellent reminder to appreciate what is around us--whether it be a painting or a stranger's hat.  A few quotes:
"The opera was Eugene Onegin, by Tchaikovsky. From the story by Pushkin. The characters had so many troubles, don't ask."
I also liked this:
"This is a painting of a photo taken in London in 1940. It is a library that was bombed in the Blitz. And then the all-clear sounded. And people returned, hope undiminished. They returned, so elegant and purposeful to the books."