The three novels today make for a wonderful mixed bag of delights. Will Self with his new ‘state of an era’ satire, then Elizabeth Day and her world of English privilege and power. Casey Scieszka humanizes immortality through her family tale. "The Quantity Theory of Morality" by Will Self Over 35 years ago, Will published his "The Quantity Theory of Insanity" to great acclaim, and it got on the Booker shortlist. He was hailed as one of the angry…