Note 17 — Chapter VI · ANALYTICA PRIORA II.
Reading edition
Analyt. Prior. II. xv. p. 63, b. 22-p. 64, a. 32. Aristotle here declares Subcontraries (as they were later called), — Some men are wise, Some men are not wise, — to be opposed only in expression or verbally (κατὰ τὴν λέξιν μόνον).