Book I, Proposition 47 is one of the most dazzling proofs from antiquity. Euclid took points, lines and angles, and leveled up to Pythagoras. Every idea you've ever had worth keeping deserves the same rigor: a clean structure, a beginning that earns its end, proof by construction.
From premise to QED.
Inside, 128 ruled pages wait for whatever you're building: the essay, the plan, the argument, the year.
For those who take their thinking seriously enough to bind it.
.: 128 ruled pages (64 sheets), 90 gsm .: 5" × 7" (12.7 × 17.8 cm) .: Full wraparound print — Euclid I.47, front to back .: Casewrap binding, hardcover
