第四部分集中论述《抱朴子外篇》体现的文学思想。
Part 4 deals with the literary thought in Bao-Pu-Zi-Wai-Pian .
第三部分主要对《抱朴子外篇》的成书过程、撰写动机、思想倾向进行详细考辨。
Part 3 deals with the writing process , the writing motivation and the primary thought of Bao-Pu-Zi-Wai-Pian .