Complex sentence: The Advaya concept refers to the "non-two" understanding of reality, which has its origins in Madhyamaka-thought, which in turn is built on earlier Buddhist thought, and expressed in the two truths doctrine.
Split into simpler sentences: The Advaya concept refers to the "non-two" understanding of reality. It has its origins in Madhyamaka-thought, which is built on earlier Buddhist thought, and expressed in the two truths doctrine.