  The other etymologies that make up this central section are systematically ordered to cover the main objects of philosophical and scientific discourse. After an only partly successful trial-run with personal names, including Homeric and mythological ones (391c–397b), Socrates and Hermogenes set out to work through the vocabulary of cosmology (397c–410e): the hierarchy of intelligent beings; soul and body; names of deities; astronomical entities; the elements; and the principles of temporal regularity. They then turn to ethics (411a–421c): intellectual virtues; moral virtues; technical virtues; generic terms of evaluation; emotive states; judgement; will; and finally truth (presumably included in this section on the ground that it underlies the intellectual virtues). Lastly, they seek the roots of all this signification in the directly imitative primary sounds out of which the simplest words are composed (421c–427d).