1."....not study,not learning is the cause of Brahmin status.Conduct is the basis,there is no doubt about it".-Yudhishtira's reply to Yaksha- Mahabharata III.312.106 2.If one's birth were to decide one's caste,then all should be Brahmins because all human beings have one father-Prajapati(God-the Creator) 3. He in whom good conduct is manifest, is a Brahmin and in whom this is absent is a Shudra.Mahabharata III.180.27