Visions, nocturnal equations, and things seen behind closed eyes.

How does a shrimp seller who couldn't swim, living alone on a sandspit reachable only by boat, end up on Betty Parsons's walls beside Pollock and Rothko?

What does a chess grandmaster do when his brain is hijacked, mid-game, by a children's poem about a stuck hippopotamus?

A goddess wrote equations on his tongue in dreams, and when mathematicians finally checked his work, he was right.