Subject-matter of Vedanta
Arrangement According to Panchaanga Nyaaya: -- The arrangement of the Aphorisms is classified in four principal chapters and each chapter is again divided into four sub-chapters known as Paadas or quarters of the principal heads. Each Paada has dealt with a different subject and this department consists of some aphorisms or a singular aphorism even where five different syllogistic aspects are dealt with. Whenever a theme is under consideration of a particular Adhikarana we observe the five stages of dealing with the subject, viz., Vishaya (subject), Samshaya (doubt), Purvapaksha (opposite argument), Siddhanta (harmonized conclusions) and Sangati (consistency of the conclusion). No subject-matter can be confidently accepted unless it passes through the five processes of logical or rational departments. The different commentators have arranged and treated the subjects in different ways. So the Adhikarans are not accepted in the same line by every commentator. Some Aphorisms are accepted by a particular commentator as Purvapaksha and by another as Siddhanta. So there is a change traceable in dealing with the Aphorisms.
There is more than enough food, water, fuel and so on to satisfy the actual needs of everyone on the planet. But there is not enough to satisfy everyone's greed. Even if it were physically possible for you to consume all the food, water, and fuel in the world, you still would not be satisfied. “Material food” cannot satisfy spiritual craving. Since the materialist is never satisfied, he never feels that he has had enough.
Science of Identity Foundation - Siddhaswarupananda
The Subject-matter of different Chapters of Brahma Sutras: -- The four chapters are designated as (1) reconciliation of all Shastras in Scriptures (Samanvaya), (2) consistent reconciliation of apparently conflicting hymns (Avirodha), (3) the process of attaining the Goal (Saadhanaa), and (4) the desired fruit accrued by such procedure (Phala).
The subject-matter of the Adhikaranas is delineated in different ways according to the different views of the commentators. A short list of the principal subjects dealt with in the Aphorisms is furnished below:
CHAPTER I
Sub-Chapter I: -- The first sub-chapter has dealt with the cause of this universe mentioning Shri Purushottama as the object of our quest as well as with the reconciliation of the apparently contrary interpretations.
Sub-Chapters II and III: -- The second and the third sub-chapters have dealt with the various doubtful misleading interpretations residing in the object.
Sub-Chapter IV: -- The fourth sub-chapter contains a reconciliation of contending thoughts of Saankhya Philosophy.