Another of Kumārajīva's main disciples, Sēngzhào continued to promote Madhyamaka teachings, and wrote several works from this standpoint, his main one being the "Zhao Lun". Two of the essays in this work ("Prajña Is Without Dichotomizing Knowledge" and "Nirvana Is Without Conceptualization") follow a similar debate format to Nagarjuna's MMK. Sēngzhào is often seen as the founder of the "Sānlùn" school proper"." His philosophy drew from various sources, including the three treatises, Mahayana sutras such as the Vimalakirti sutra, as well as Taoist works such as Lao-tzu, Chuang-tzu and Neo-Daoist "Mystery Learning" ("xuanxue" 玄学) texts. His use of Taoist influenced paradoxes made him a favorite in the Chan school who considers him a patriarch.