I thoroughly believe there is a strong correlation between design and writing. I might be biased, though, since my best friend is a designer. Even though we have virtually opposing views on how to handle life situations, we get along really well because of our shared values. But I remember the exact moment when I realized that design and writing intersect: when I felt that both the writing and font used in an essay in Debbie Millman's book, Look Both Ways: Illustrated Essays on the Intersection of Life and Design was what made me laugh. It wasn't a book I would have flipped through if it wasn't lying around on my best friend's living room table.
With that said, I'm really enjoying through 5 Questions for 100 Designers by Yevgeny Yermakov.