Even he who has studied the four Vedas but whose conduct is wicked cannot be distinguished from Shudra. He who celebrates the Agnihotra and of subdued passions is called a Brahmana.
चतुर्वेदोऽपि दुर्वृत्तः स शूद्रादतिरिच्यते। योऽग्निहोत्रपरो दान्तः स ब्राह्मण इति स्मृतः॥