Beyond this an abstract concept of the numbers, fixed by a word, must take the place of the perception; which does not therefore actually occur any longer, but is only indicated in a thoroughly definite manner.
hortik aurrera zenbakiaren kontzeptu abstraktu batek, hitz baten bidez finkatuak, begiespenaren lekua ordeztu behar du, zeina horregatik ez baita errealki burutzen, baizik eta erabat determinatuki izendatzen.