A class on Bhagavad Gita 4.13 given by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada on April 2, 1974 in Mumbai, India.

Bhagavad Gita 4.13

cātur-varṇyaṁ mayā sṛṣṭaṁ

guṇa-karma-vibhāgaśaḥ

tasya kartāram api māṁ

viddhy akartāram avyayam

According to the three modes of material nature and the work associated with them, the four divisions of human society are created by Me. And although I am the creator of this system, you should know that I am yet the nondoer, being unchangeable.