So at night, everyone sleeps. That's a fact. Therefore the gṛhamedhī, nidrayā hriyate naktaṁ (SB 2.1.3): they pass the night either by sleeping or by sex indulgence. Nidrayā hriyate naktaṁ, vyavāyena ca vā vayaḥ. Vayaḥ means duration of life. They are wasting time in two ways at night: either by sleeping or by sex indulgence, going to the club, going to dancing, going to this or going to that or sleeping. This is the business at night. Nidrayā hriyate naktaṁ vyavāyena ca vā vayaḥ. And daytime? Divā, divā means "daytime." Cārthehayā: simply searching after money: "Where is money? Where is money? Where is money? "Divā cārthehayā kuṭumba-bharaṇena vā. Or in maintaining the family, children, purchasing for them, doing something.
So daytime's engagement and night's engagement is finished, then where is the engagement for ātma-tattvaṁ? Where is the engagement for understanding self-realization? This is the difference between gṛhamedhī and gṛhastha. A gṛhastha means he may live, just like here we see Śrī Caitanya Mahāprabhu, Śrī Nityānanda Prabhu, Śrī Advaita Prabhu and Gadādhara Prabhu and Śrīvāsa Prabhu, they are all gṛhasthas, family men, but their business was different—to cultivate self-realization. Not that divā cārthehayā rājan kuṭumba-bharaṇena vā. So the difference between gṛhasthas and gṛhamedhīs is like this. A gṛhastha is living a regulative life on principles to understand self-realization, and a gṛhamedhī, who has no vision, no idea of the aim of life . . . (break)
. . . that the gṛhamedhīs, they are sleeping. So for their good, He took sannyāsa, renounced order of life. This brāhmaṇa, kṣatriya, vaiśya, śūdra, the brahmacārī, gṛhastha, vānaprastha, they are for mutual cooperation. They are different department, but they are for mutual cooperation. As I have already explained several times, just like in my body there are different departments—these eight departments—the arm department, the belly department and the leg department. Similarly, the human society also be divided into departments. The brain department means the brāhmaṇa and the sannyāsa, the brain department. And the arms department means the kṣatriya and the gṛhasthas. And the belly department is the vaiśyas and vānaprastha;, and the leg department, the śūdras and the brahmacārīs, two legs. This is the scientific division of human society.