Caitanya Mahāprabhu says, "I am not a brāhmaṇa. I am not a kṣatriya. I am not a vaiśya. I am not a śūdra," because the material human society designation is the varṇāśrama according to Vedic civilization. Even those who are not on the varṇāśrama platform, they are animals. That is Vedic civilization. So to come to the platform of truth, one has to know what are the defects of material life, how it is taken by the asuras. That is being described by Kṛṣṇa, asatyam, asatyam apratiṣṭham, apratiṣṭhaṁ te. Te means these asuras. Jagad āhur anīśvaram (BG 16.8). It is controlled by the Supreme.
In the material stage we think that it is being controlled by the laws of material nature. That is also fact. But behind the laws of material nature there is Kṛṣṇa. The material laws of material nature is not working blindly. That is a fact. Combination of material thing, a big, nice airship, is moving. It is combination of material things. There are iron, aluminium, wood and petrol, so many other things, the combination of material things. But this combination of material things, if it is kept in one place, in many thousands of years it will not fly. It will not fly—the petrol is here; everything is there—unless the pilot is there. When the pilot comes, he pushes the button. Then it becomes.
So these foolish, these atheistic persons, mūḍhas, they cannot see: there must be a spiritual touch.