FOUR EXTANT TEXTS IN SANSKRIT 37 I The Twenty Verses and Their Commentary (Vimsatika-karika) 37 II The Thirty Verses (Trimsika-karika) 37 III The Teachings of the Three Own-Beings (Tri-Svabhava-nirdesa) 37 IV Commentary on the Separation of the Middle From Extremes (Madhyanta-vibhaga-bhasya) 38 THREE TEXTS WITH NO FULL SANSKRIT ORIGINALS 38 V A Method for Argumentation (Vada-vidhi) 38 VI A Discussion of the Five Aggregates (Pancaskandhaka-prakarana) 38 VII A Discussion for the Demonstration of Action (Karma-siddhi-prakarana) 38