Mitsumasa Anno (born March 20, 1926) was a Japanese illustrator and writer of children's books, known best for picture books with few or no words. He received the international Hans Christian Andersen Medal in 1984 for his "lasting contribution to children's literature".
I love the eerie, cerebral tone, and the concepts tend to be explained very well, but Anno never explains their larger application. I'm left thinking, "Huh, that's cool. I wonder how it relates to math, or anything else, for that matter."