The subject of autobiography is always self-definition, but it cannot be self-definition in the void. The memoirist, like the poet and the novelist, must engage with the world, because engagement makes experience, experience makes wisdom, and finally it’s the wisdom—or rather the movement toward it—that counts. “Good writing has two characteristics,” a gifted teacher of writing once said. “It’s alive on the page and the reader is persuaded that the writer is on a voyage of discovery.

In nonfiction, never. In nonfiction the reader must believe that the narrator is speaking truth. Invariably, of nonfiction it is asked, “Is this narrator trustworthy? Can I believe what he or she is telling me?

In each case the writer was possessed of an insight that organized the writing, and in each case a persona had been created to serve the insight. I became enraptured, tracing out the development of the persona in memoir after essay after memoir (it was out of this rapture that I realized I was a nonfiction writer). I began to read the greats in essay writing—and it wasn’t their confessing voices I was responding to, it was their truth-speaking personae.

In all imaginative writing sympathy for the subject is necessary not because it is the politically correct or morally decent posture to adopt but because an absence of sympathy shuts down the mind: engagement fails, the flow of association dries up, and the work narrows. What I mean by sympathy is simply that level of empathic understanding that endows the subject with dimension. The empathy that allows us, the readers, to see the “other” as the other might see him or herself is the empathy that provides movement in the writing. When someone writes a Mommie Dearest memoir —where the narrator is presented as an innocent and the subject as a monster—the work fails because the situation remains static. For the drama to deepen, we must see the loneliness of the monster and the cunning of the innocent. Above all, it is the narrator who must complicate in order that the subject be given life.

When Rousseau observes, “I have nothing but myself to write about, and this self that I have, I hardly know of what it consists,” he is saying to the reader, “I will go in search of it in your presence. I will set down on the page a tale of experience just as I think it occurred, and together we’ll see what it exemplifies, both of us discovering as I write this self I am in search of.” And that was the beginning of memoir as we know it.