Note 24 — Chapter II
Reading edition
'From being long and vehemently attent upon geometrical figures,' Hobbes says after referring to the after-images of the sun (Leviathan, part i., ch. 2), 'a man shall in the dark (though awake) have the images of lines and angles before his eyes: which kind of fancy hath no particular name; as being a thing that doth not commonly fall into men's discourse.'