To be necessary, it must never leave the characters it concerns in the same sentiments they had before, but still produce either love or hatred, etc. Sometimes, the change consists in the discovery, sometimes it follows at a distance, and sometimes results immediately from it; the last was used, for example, in Oedipus Rex.
To be necessary, it must never leave the characters it deals with in the same emotional state they were before, but still produce either love or hatred, etc. Sometimes, the change involves revelation, sometimes it occurs at a distance, and sometimes it results directly from it; the latter was used, for example, in Oedipus Rex.