Complex sentence: As such, the tract takes the form of an extended address by the philosopher, and he occasionally acknowledges the audience as intimates, although Plotinus is very specific in stating that his target is not his students exclusively, but Gnostics so called.
Split into simpler sentences: As such, the tract takes the form of an extended address by the philosopher, and he occasionally acknowledges the audience as intimates. Although Plotinus is very specific in that he states his target is not his students exclusively, but Gnostics so called.