The Scent of Precedent: On Samuel Pepys and the Art of Personal Indexing
We often imagine the history of personal knowledge management as a sequence of increasingly sophisticated technologies, from the commonplace book to the hypertext database. We dream of frictionless capture and instantaneous retrieval, building systems that feel like extensions of our own minds. But sometimes, the most resonant lessons come not from a futuristic vision, but from the mundane, ink-stained practice of a man who simply wanted to find things again.
Consider Samuel Pepys. For nine years, from 1660 to 1669, he kept a detailed diary of life in Restoration London, a sprawling document of over a million words. But his more profound system for thought wasn’t the diary itself; it was the comprehensive index he meticulously compiled for it. This wasn't a simple list of names. It was a dynamic, evolving map of his world, a tool for navigating the dense forest of his own experience.
Pepys indexed his life in a way that feels surprisingly modern. He didn’t just note that he had dined with the King; he created entries for “Charles II,” for “Dinner,” for the specific food eaten, and for the consequences of the conversation that followed. A single event was atomized into multiple, interconnected pathways. He understood that the value of a record is not merely in its existence, but in the multiplicity of its points of access. We do something similar today when we tag a digital note with #project-alpha, #meeting-notes, and #urgent, creating multiple vectors for a future self who may not remember the context in which the note was born.
His method reveals a crucial, often overlooked principle: the index is not an afterthought, but a parallel creation. Pepys worked on his index concurrently with the diary, often adding to it as he wrote. This act of simultaneous organization forced a kind of immediate reflection. It was a process of distillation, of asking, “What is the essence of this passage, and under what circumstances might I need to recall it?” This stands in stark contrast to our own common practice of amassing thousands of unread browser tabs or unannotated clippings in a digital graveyard, promising ourselves we will ‘organize them later’—a tomorrow that rarely comes.
Pepys’s index was also deeply personal and associative. He used idiosyncratic terms that made sense only to him. An entry might lead to “Visions, good,” referencing not a mystical experience but a moment of professional insight. His system breathed with his own cognitive rhythms. It wasn't designed for public consumption or universal logic; it was designed for one user: Samuel Pepys. In an age of standardized productivity apps and best-practice templates, there is a rebellious wisdom in crafting a system that perfectly, peculiarly, fits the contours of your own mind.
We chase after flawless, automated retrieval, hoping our software will think for us. Pepys offers a humbler, more human alternative. His legacy isn’t just the vivid picture of 17th-century life he left behind, but the quiet discipline of the index—the deliberate, ongoing act of creating scent trails through the landscape of one’s own thoughts. It is a reminder that before we can manage knowledge, we must first learn to be our own attentive librarians, patiently building the catalog by which we will someday understand our own lives.
Notes & further reading
A few pages I came back to while writing this: