Which books do you recommend for learning about all of the different branches of Sanatana philosophy in brief?
- I have a copy of Sarva Darsana Sangraha written by 14th century Hindu scholar Madhava Acharya, where he lists the major schools of Sanatana philosphy and writes commentary on them.
- Somebody recommended me The Principal Upanishads by Dr. S. Radhakrishnan. How is that book?
Please recommend me some books and/or scriptures where I can learn about many different branches of Sanatana philosphy in brief.