The names of substances, if they be used in them as they should, can no more disturb moral than they do mathematical discourses; where, if the mathematician speaks of a cube or globe of gold, or of any other body, he has his clear, settled idea, which varies not, though it may by mistake be applied to a particular body to which it belongs not.
Substantzien izenek, behar bezala erabiliz gero, ezin ditzakete diskurtso moralak matematikoak baino gehiago nahasi, zeren matematikaria urrezko kuboaz edo esferaz, edo beste edozein gorputzez, mintzo bada, bere ideia argi eta finkoa dauka, aldatzen ez dena, errakuntza ez dagokion gorputz bati aplikatzea gerta daitekeen arren.