DISCRETIO EST DISCERNERE PER LEGEM QUID SIT JUSTUM by Law Professor Latin, meaning Discretion is to discern through law what is just. Related Posts:NON DEFINITUR IN JURE QUID SIT CONATUSNECESSITAS NON HABET LEGEMIMPOTENTIA EXCUSAT LEGEMREX NON DEBET JUDICARE SED SECUNDUM LEGEMCONVENTIO ET MODUS VINCUNT LEGEMNON SEQUITUR