 However much scholars may disagree about Dignāga’s aim in the formulation of the canonical syllogism, all agree that his works set the framework within which subsequent Buddhist thinkers addressed philosophical issues pertaining to inference and debate. Thus, Śaṇkarasvāmin (c. 6th century ce), a pupil of Dignāga (Frauwallner 1961, 140), wrote a brief manual of inference for Buddhists, called the Nyāya-praveśa (Beginning logic), based directly on Dignāga’s work. Not long thereafter, Dharmakīrti (c. 7th century ce), the great Buddhist metaphysician, also elaborated his views on inference and debate within the framework found in Dignāga.