The Author is the real person who wrote the text, situated in a specific historical moment, culture, and set of personal circumstances. The author has intentions, but also blind spots—biases and assumptions they may not even recognize, shaped by the era they lived in.

The Narrator is a construct inside the text—the voice telling the story. This voice may or may not share the author's views. A narrator can be reliable or unreliable, naive or knowing, a full-blown character (like Nick Carraway in The Great Gatsby) or a nearly invisible third-person presence. Crucially, the narrator's perspective is bounded by the story world—what they know, what they've experienced, what they choose to reveal.

You (the reader) bring your own historical moment, cultural background, personal experiences, and values to the encounter. You're not a blank slate absorbing meaning—you're actively constructing it based on what you notice, what resonates, and what critical framework you're using (consciously or not).

Why the Gaps Matter

Meaning isn't fixed at any single point—it emerges in the friction between these three:

Author ≠ Narrator: An author can create a narrator whose views they don't endorse—think of satire, irony, or unreliable narration. Jonathan Swift didn't actually think eating Irish babies was a solution to poverty; his narrator in "A Modest Proposal" does. Collapsing author and narrator into one voice causes serious misreadings.

Author's context ≠ Your context: A novel written in 1850 reflects the assumptions of 1850—about race, gender, class, empire—that the author may not have questioned. Reading it today, you inevitably notice things the author couldn't see as remarkable, because your context makes them visible.

Narrator's limits ≠ Your knowledge: You often know more than the narrator does (dramatic irony), or you can recognize the narrator's biases even when the narrator can't. A first-person narrator convinced of their own righteousness may unintentionally reveal cruelty to you, the reader, even while believing themselves justified.
Critical Lenses Sharpen These Gaps

Different critical lenses tell you where to look for these tensions:

Historical/biographical criticism asks: what did the author intend, given their moment? What pressures or blind spots shaped this text?
Reader-response criticism flips the emphasis entirely: it argues meaning is created by you, the reader, not excavated from the author's intent. Different readers, different meanings—all legitimate.
Feminist, postcolonial, or Marxist criticism often reads against both author and narrator—asking whose voices are silenced, whose assumptions about power go unquestioned, even if neither author nor narrator meant to make a political statement.
New Criticism would tell you to bracket the author entirely and focus only on the text itself—treating "authorial intention" as somewhat irrelevant to interpretation.
A Concrete Example

Take Huckleberry Finn.

Author Mark Twain was a 19th-century white man writing a critique of racism using satire.
Narrator Huck is a barely-literate boy who has absorbed his society's racism, even as his actions (helping Jim escape) contradict it—he narrates his own moral growth without fully understanding it himself.
You, reading today, might apply a lens that asks whether the novel's use of racial slurs and dialect, however satirically intended, still causes harm regardless of authorial purpose—a question the author's context couldn't have anticipated in the same way.

None of these three readings cancels out the others. The richest interpretation usually holds all three in view at once, rather than collapsing them into "what did the author really mean"—as if that settles everything.