What Is a Biography? Writing a Life From the Outside
By the BrainSnail editorial team. How these articles are written and checked, and how to tell us when one is wrong.
A biographer has access to letters, diaries, official records, photographs, the testimony of people who may be lying and a body of published work, and from these must construct an account of an interior life they never observed. Everything interesting about the form follows from that gap: what counts as evidence for a motive, how much shaping a life will bear before it becomes fiction, and whose life gets written at all.
How the form developed
Ancient biography served moral instruction rather than historical accuracy, with Plutarch pairing Greek and Roman lives explicitly to compare virtues and stating that he was writing lives rather than histories, so that a small incident revealing character mattered more than a battle. Medieval hagiography followed the same logic for saints, with the life shaped to demonstrate holiness and miracles included as evidence. The modern form is conventionally dated to James Boswell's Life of Samuel Johnson in 1791, which is unusual because Boswell recorded conversations in detail at the time, spent years in his subject's company, and included material that made Johnson look ridiculous, which was new: a biography that presented its subject as a person rather than as an example. Victorian biography retreated from that into monumental commemorative volumes, usually authorised by the family, until Lytton Strachey's Eminent Victorians in 1918 attacked four reputations with irony and brevity, and established the modern licence to treat a subject sceptically.
The problems of the form
Several difficulties are inherent rather than avoidable:
- •Evidence for interior states, since a biographer can document what someone did and must infer why, and the inference is the part readers value and the part that cannot be verified
- •The archive determines the book, so a subject who kept letters is written about and one who did not is not, and the survival of papers is frequently a matter of who had a house dry enough to store them
- •Selection, since a life contains far more than any book, and choosing which decade to expand is an argument about what mattered
- •Narrative shape, because lives do not have three acts and readers expect them to, which pulls toward imposing a trajectory of development or decline that the subject would not recognise
- •Hindsight, which makes early events look like foreshadowing of outcomes nobody could have anticipated
- •Access and its price, since an authorised biographer gets the papers and the interviews and may lose the freedom to publish what they find
The ethics
The form raises questions that its practitioners argue about openly. Janet Malcolm's opening line in The Silent Woman, describing the biographer as a kind of professional burglar, is the sharpest statement of the case against: the biographer enters a life, takes what is useful, and publishes material the subject would not have chosen to share. Living subjects and their families have interests, and estates control copyright in unpublished letters, which gives them a veto that has shaped several books; Ted Hughes's control of Sylvia Plath's papers is the most discussed case. Posthumous subjects cannot object. The treatment of sexuality, illness and private failure has changed enormously, with earlier biographies omitting what later ones centre, and the reverse charge is also made, that modern biography over-reads a life through its wounds. There is also a category of subject who has actively shaped the record, destroying letters, writing self-justifying memoirs or briefing chosen writers, which means the biographer is working against an existing account rather than in a vacuum.
Whose lives get written
The distribution of biographies is not a reflection of who mattered. It reflects who left papers, who held offices that generate records, who had money, and who publishers believe will sell, which together produce a canon dominated by politicians, generals, writers and the wealthy, overwhelmingly male and mostly from a few countries. The corrective efforts have taken several forms: group biography, which follows several figures together and can reach people with thinner individual records; microhistory, which reconstructs an ordinary life from parish registers, court records and account books, of which Carlo Ginzburg's study of a sixteenth-century miller tried by the Inquisition is the model; and biographies of people known only through their appearance in someone else's documents, including enslaved people, servants and the subjects of colonial administration, which require inference from fragments and an explicit acknowledgement of what cannot be known. Saidiya Hartman's practice of critical fabulation, which marks speculative reconstruction as speculative rather than smoothing it into narrative, is one formal answer to the problem.
The takeaway
Biography constructs an interior life from external evidence, and its central difficulty is that motive must be inferred while action can be documented. Ancient lives served moral instruction, Boswell's Johnson in 1791 established the modern form by presenting a person rather than an example, and Strachey in 1918 licensed scepticism toward the subject. The archive determines what can be written, which is why the canon reflects who kept papers and held office, and group biography, microhistory and explicitly marked reconstruction are the responses to that bias.