It doesn't matter so much what you write, as by the terms of great fictive art, but about what you conjecture to understand. (Shakespeare's characters are full of conjectures, positing, theorizing, posturing, in keeping with their personalities and situations.) Without doing so the air of fiction is too thin, too thin to satisfy the reader for long, too thin to allow the writer to put in a consistent effort.

All we can do is theorize and make conjectures, aided by the development of a thinking theoretical science. Just as we have physics, we have the thoughts of Buddha and Jesus. Beatitude, a realization of illusion, is the potent vehicle by which to grasp the operation of reincarnation as a primary truth of existence. Turning the mind away from such thought will leave one less able to act beneficially. A constant nameless sacrifice, not necessarily unenjoyable, provides for the well-being of future incarnations and all else we are connected to and part of. We will all discover, ultimately, on our path the reality of incarnation and proper action, in order to live in a better world, accepting the path as it is laid out before us.

One may evaluate a writer on such terms. Melville? Dickinson? Writers evolve with the realizations of the times.