The Infinities' is a shortish book but densely loaded with Nabokovian slyness, gorgeous imagery, and disturbing insights into what it means to be mortal.

For novelists, sharply drawn moral conflicts are often useful, and even human and personal disasters can be seen as material.

DeLillo has said that he no longer feels a compulsion to write long, compendious books. In his later years, Saul Bellow said something similar. DeLillo, of course, has written very long in the past, notably with the 850-page Underworld (1997), and his story has been America.

You can't believe anything that's written in an historical novel, and yet the author's job is always to create a believable world that readers can enter. It's especially so, I think, for writers of historical fiction.