Socrates, however, was busying himself about ethical matters and neglecting the world of nature as a whole but seeking the universal in these ethical matters, and fixed thought for the first time on definitions; Plato accepted his teaching, but held that the problem applied not to sensible things but to entities of another kind-for this reason, that the common definition could not be a definition of any sensible thing, as they were always changing. Things of this other sort, then, he called Ideas, and sensible things, he said, were all named after these, and in virtue of a relation to these;
987b) Bestalde Sokrates, etika kontuetan arduratuta eta inola ere ez naturan bere osotasunean, baina horietan unibertsalaren bila aritua, eta 5) pentsamendua definizioetan jartzen lehenengoa izanda, onartu zuen Platonek, baina Kratiloren eta Heraklitoren eraginarengatik pentsatu zuen Platonek hurabestelako gauza batzuetan ematen dela eta ez sentimenezko gauzetan, ezinezkoa baita definizio arrunta sentimenezko gauzaren bati egokitzea, ez etengabeko aldaketan daudenei, behintzat.