Leonardo da Vinci
Painter and engineer · 1452–1519
About 7,000 pages of his notebooks survive, many of them written in mirror script.
After the aerial screw, Manuscript B, about 1489
DESIGNED FOR FOUNDERS
Think out loud. Compass turns every thought into a clean note, then shows you the patterns you keep circling.
THE NOTEBOOKS
Inventors, scientists and founders have thought on paper for five centuries. A few of the pages we still talk about.
TODAY
Plenty of today's best-known founders still think on paper.
Harpo Productions
Has kept a journal since she was 15.
Virgin Group
Keeps a notebook on hand almost everywhere he goes.
Spanx
Carried dozens of the same kind of notebook while building Spanx, to catch her ideas.
Microsoft
Took Think Weeks alone in a cabin to read, think and write.
Canva
Journals to clarify her thinking, usually in the evening.
Amazon
Built Amazon's meetings around six-page memos, read in silence first.
DVF
Starts a new diary every January 1 and chooses her words for the year.
Airbnb
Keeps a daily journal and writes himself notes every day.
Their notebooks never wrote back.
Yours does.
YOUR TURN
Join other world-class founders who believe notes should work harder.
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