When journal-keepers try to sum up how their diary works, or what it means to them, they’ll often use a metaphor. If you want to see a book that pops with diary metaphors on almost every page, Alexandra Johnson’s Brief History of Diaries (2011) provides a good starting-point.
From Johnson and other sources, I looked at more than 250 diary metaphors from nearly three centuries of English-language writers. Taken together, most fit into just a handful of categories, and from this pattern an interesting picture of the diary begins to emerge.
To start with, many people think of their diary as a tool—an instrument for observing, measuring, and navigating through life’s experiences. These writers might portray their diary as a camera, a thermometer, a magnifying glass or microscope, a time machine, a compass, or a map.
And what unknown territory do they claim to discover or chart with these instruments? Possibilities include measuring progress toward professional goals, gains in mental health, health and wellness habits, or the spiritual growth of the journal-keeper.
Related to this type of description is the diary as a formal record: a set of data to consult later, perhaps at some point of reckoning that requires evidence or proof. From this perspective the diary may look to its writer like an account ledger, a ship’s log, a witness statement, a field notebook, or an inventory.
An even broader view of the diary describes it as a miscellany: a big comfortable container into which the writer can toss the raw material of life. The writer may hope that while stored inside, the contents will undergo transformation and clarification. In this class of metaphor we find objects like a specimen case, a tote bag, or a storage bin. Virginia Woolf’s famous passage describing her diary as a “deep old desk or capacious hold-all” exemplifies this category, especially as she goes on to say:
I should like to come back, after a year or two, and find that the collection had sorted itself and refined itself and coalesced, as such deposits so mysteriously do, into a mould, transparent enough to reflect the light of our life, and yet steady, tranquil compounds with the aloofness of a work of art. (Woolf, Diary, April 20, 1919)
Beyond gathering and sorting random experience, some people experience their diary as a place to develop skills and produce new work. This type of metaphor may depict the diary as a creative refuge where writers feel free to experiment with style. “For a writer,” Kristine Dugas writes on the first page of her doctoral thesis on Literary Journals, “a journal is a work-space.” Metaphors of the diary as a sketchpad, studio, crucible, workshop, or playing-field convey how they put their diaries to use.
Metaphors describing the diary as an inanimate object like a tool, container, or workroom don’t tell the whole story. The perception of a human presence, a person inside the diary—perhaps seen through a lens, window-frame, or mirror—may strike the journal-keeper even more strongly.
Gail Godwin, in her essay “A Diarist on Diaries” (Antaeus 61, 1988) explains how she has “found many sides of myself in the diaries of others. I would like it if I someday reflect future readers to themselves, provide them with examples, courage, and amusement.”
Parallel to this image of a mirror, writers have compared their diary to a portrait or a shadow of the writing self. These writers may address the diary as their alter ego or companion. The diary develops a personality, often with more freedom to air its views, desires, and attitudes than the writer may feel comfortable expressing outside its pages.
These categories don’t exhaust all the possible diary metaphors. You can devise a unique image that expresses how you see your diary—this is an exercise I’ve sometimes asked students to do.
James Boswell probably wins the prize for the most quirky and unforgettable diary metaphor. In 1783 he published a newspaper column (“On Diary”) in which he tried to persuade readers of the value of keeping a diary.
Boswell worried about the problem that even the most ordinary life offers vastly more experiences than a writer possibly has time to record. “I do not think it possible to [keep a diary],” he acknowledged, “unless one has a peculiar talent for abridging.”
To convey his idea of condensing the multiplicity of life into a concise journal entry, Boswell confided, “I have thought my notes like portable soup, of which a little bit by being dissolved in water will make a good large dish; for their substance by being expanded in words would fill a volume.”