Seeking title of a book read long ago
Cannot recall the name of the book.
Plot: a hereditary galactic ruling class maintains control of their super intelligent class through a genetic marker that induces random fits of compulsion. The OCD episode can last minutes, hours, or even days. The fits are seen as a sign of being touched by the Divine.
I could go on, but I think this is probably enough. I found the eventual discussion of what constitutes faith when the genetic compulsion is removed to be profound (at least for me).