The Kathāvatthu gives us the context for the debates between the early sects which gave rise to the emergence of so-called Mahāyāna. Dube has given an excellent study for navigating this literature.
For a review of this book:
“I say, beware of all enterprises that require new clothes, and not rather a new wearer of clothes.” – Henry David Thoreau, Walden, 1854
Secure your own mask before assisting others. – NORTHWEST AIRLINES (Pre-Flight Instruction)