[[ethos|Ethos]] is cool and ongoing; [[pathos]] is hot and momentary.
[[Quintilian]] notes that previous writers
> therefore explain pathos as describing the more violent emotions and ethos as designating those which are calm and gentle: in the one case the passions are violent, in the other subdued, the former command and disturb, the latter persuade and induce a feeling of goodwill. Some add that ethos is continuous, while pathos is momentary. ([[Institutio Oratoria (95 AD)|bk IV, ch 2]])
(...he does go on to note that there are times when you want the hot, violent emotions to be continuous.)