The Archive Index Cards | Set of 5 give the line that stayed with you a card of its own. The front of each card is printed with a grid of small circles, a few of them drawn darker so a word appears when you look across the whole card. The back is where you write, with prompts that ask where a passage came from and why it mattered to you, above a shaded panel that leaves room for the passage itself.
Copy down a quote the moment you finish the chapter. The cards arrive in a vellum envelope printed with a passage in script, and the envelope is left unsealed so your finished cards can go back into it. File a set at the back of your planner or tuck one into the book it came from, and what you read stays with you long after you close it.