To add to my remarks on ‘losing your temper with metaphor and analogy’;
losing your temper
once you have managed to grind your blade or intellect without drawing its temper you need to hone it to keep it razor sharp - sharp enough to split hairs. For that you need a paragon. An ‘akone’ is a whetstone (Gk.) against which (para) you hone away your rough edges, emulous as you are. If you study philosophy let not your paragon be the terror of the seminar room. Such persons are abrasive certainly but produce a scabrous edge. Some would say a rough edge is a good working edge, suitable for politics. Certainly a knife edge won’t last very long on a hatchet.