The Illustrious One said The status of a Brahmana, O goddess is highly difficult to attain. O auspicious lady, one becomes a Brahmana through creation or birth. Similarly the Kshatriya, the Vaishya, and the Shudra, all becomes so through original creation. This is my opinion.
श्रीमहेश्वर उवाच ब्राह्मण्यं देवि दुष्प्रापं निसर्गाद् ब्राह्मणः शुभे। क्षत्रियो वैश्यशूद्रौ वा निसर्गादिति मे मतिः॥