Complex sentence: The text of no complete Insight is given, which the narrarator claims is for brevity's sake; he notes that the' partial translation' of the Ninth Insight was 20 typewritten pages in length.
Split into simpler sentences: The text of no complete Insight is given, apparently for brevity's sake. For example, the narrator tells us a' partial translation' of the Ninth Insight was 20 typewritten pages in length.