I happen to be reading the book Neurotribes which is a decent (although sometimes pathologizing) treatment of autism, and it retrospectively diagnoses Dirac as

I happen to be reading the book Neurotribes which is a decent (although sometimes pathologizing) treatment of autism, and it retrospectively diagnoses Dirac as on the spectrum. Silberman, the author, does reference and seems to rely heavily on the biography The Strangest Man.