Your shelf · A line that stops you
The Commonplace Book
For centuries, readers kept one. A blank book by the bed where you copied out the lines that stopped you — Marcus Aurelius did it, John Locke wrote a whole indexing system for his, Virginia Woolf kept hers for decades. Chromatics gives you that book back. And because it is the one reader that knows who is speaking on every line, a kept line arrives in that voice’s color.
Your commonplace book · 3 lines
“Whatever our souls are made of, his and mine are the same.” Catherine · Wuthering Heights
“I cannot live without my life. I cannot live without my soul.” Heathcliff · the Grange
… how any one could ever imagine unquiet slumbers for the sleepers in that quiet earth. Narration · the last page
Your shelf · Why a color
A kept line in its own voice
Every other reader hands you a yellow smear. The same flat highlighter for the narrator, the villain, the line that broke your heart. Chromatics already gives each character one color for the whole book, so when you keep a line, it keeps that color. Catherine’s lines stay Catherine’s. Months later, flipping back through your kept pages, you don’t just read the words — you hear who said them. A true exchange between two voices stays neutral, with both colors showing through. Nothing to pick, nothing to fuss over.
Your shelf · The old habit
The lines you keep, and the lines you return to
The tradition has a name: a commonplace book. Locke published a method for indexing his in 1706. Ryan Holiday runs a modern version on index cards and says nearly every dollar he’s earned was written first on the back of one. The Zettelkasten is the same idea with more string.
They all turn on a second step almost nobody takes. A highlight you never reopen is, as one writer put it, write-only memory — it felt important once and then sank. So Chromatics builds the returning in. Now and then, a line you kept comes quietly back to you, in its color, in the evening — never a nag, never a streak to protect. Just the sentence, handed back, in case you’re ready for it again.
Your shelf · Keep fewer
Keep less, treasure more
The readers who highlight everything remember the least — the research is unusually blunt about it. A marked line only stands out when the lines around it aren’t. So the book quietly rewards restraint: the three lines a chapter you’ll actually carry, not the thirty you won’t. There is no counter shaming you, no quota to fill. Just a private place that gets better the more selective you are.
Your shelf · They’re yours
Your lines are yours
Kindle buries your highlights in Amazon’s cloud. Pocket shut down and took a lot of people’s saved reading with it. We learned the lesson the other way around: a kept line is yours, and leaving is a feature. One tap copies your commonplace book as clean Markdown — speaker, scene, and your notes intact — straight into Obsidian or Notion. Or export the whole thing as a file or a spreadsheet. No lock-in, no walled garden, no asking permission to take your own reading with you.
Start the book. Keep the line. It’ll be there when you come back.
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