Sketchbooks: Klee’s affinity for sketchbooks, calendars, and diaries — “I have tons of them, full and empty!” she says — is both emotional and physical: “I need them to empty my brain. I write down my own ideas — things/words/sentences I hear/like/see — around me. I write down ideas I’d like to realize somewhere. But I also just love handwritten books. I love to touch them, I love the odor of them, I love when they are worn out, and I like the idea of reopening them when I am old.”