The precision of a sharp point gave English its word for clarity. Latin distinguere meant 'to separate by pricking' — dis- (apart) plus stinguere (to prick) — evoking the stylus that scratched distinct marks into wax tablets or the pointed tool that separated one item from another. The metaphor transferred naturally from physical marking to mental clarity: things are distinct when the mind can prick them apart, seeing where one ends and the other begins. English borrowed the word from Old French in the fourteenth century, and it settled into two complementary senses: 'recognisably different' (distinct species) and 'clear to perception' (a distinct sound). The Latin root stinguere produced an unlikely family in English. Extinguish preserves the 'quenching' sense — pricking out a flame. Instinct comes from instinguere, 'to prick inward,' describing the internal goad that drives animal behaviour. Even the word sting may be a distant relative through Proto-Indo-European *steig- (to prick). The connection between sharpness and understanding runs deep in language — we speak of sharp minds, pointed remarks, and piercing insights, all echoing the same ancient link between a jab and a clear distinction.