That is the whole program of varṇāśrama-dharma, varṇa and āśrama. Varṇa means that... You have perhaps heard, the caste system in India. That is called varṇa. The caste system which is now going on, that is a vitiated form of caste system. You have heard in the Bhagavad-gītā that cātur-varṇyaṁ mayā sṛṣṭaṁ guṇa-karma-vibhāgaśaḥ (BG 4.13). This varṇa and āśrama is also creation of the Supreme Lord Kṛṣṇa. That is not man-made. That is not man-made. So how that varṇāśrama is created?
Now, guṇa-karma-vibhāgaśaḥ. The guṇa... As I have already told you, that we are being controlled in three qualities or three modes of nature, so anyone, he must be either under the spell of these three qualities. So according to the quality and according to the karma, the varṇas are there.