So kṛte yad dhyāyato viṣṇum. Perfection of life was attained in the Satya-yuga... Because in the Satya-yuga there is no disturbance. Every man is perfectly religious and peaceful, and therefore they could concentrate their mind focusing their mind on Viṣṇu. So this dhyāna, meditation, was possible in the Satya-yuga.
Kṛte yad dhyāyato..., tretāyāṁ yajato makhaiḥ. Then, next stage, next yuga is performance of sacrifices. People, the brāhmaṇas, were so powerful that they could give the desired result by performing sacrifices, and there were means of securing the ingredients. Just like tons of ghee is wanted. Where is ghee? It is all dalda. Where you can perform sacrifice? (laughter) Ghee is finished. You cannot secure even the ingredients. There is no qualified brāhmaṇa. Therefore yajña is not possible in this age.
Kṛte yad dhyāyato viṣṇuṁ tretāyām..., dvāpare paricaryāyām (SB 12.3.52). And gorgeous temple worship according to the principle was possible perfectly in the Dvāpara-yuga. Our this temple worship, Deity worship, we are following the principles of Deity worship because our ācāryas established temple, but main principle is chanting. Therefore, whatever we are doing—we are offering prasādam to the Lord, we are having maṅgalārati—the main principle is chanting Hare Kṛṣṇa mantra. This temple worship, it can be avoided, but we cannot avoid chanting Hare Kṛṣṇa mantra.
As such, we have introduced in several centers that "Begin with Hare Kṛṣṇa mantra, keeping the picture of Guru-Gaurāṅga." If it is not possible to worship the Deity according to the rules and regulation, there is no need of establishing temple. But if there are devotees who can actually keep the temple worship method in right order, then... Otherwise, simple, by chanting, everything is complete.
But when there is temple worship, there is automatic purification because we have to rise early in the morning, we have to take bath. This kind of purification help..., is helped by temple worship. But when there is grossest type of people who cannot take to this, simply chanting will do. Hari nāmānukīrtanam. Kalau tad, kali... Kalau. Kalau means this age, that cleanliness is very difficult to maintain. Therefore kalau tad dhari-kīrtanāt. This is recommended.
So trayyāṁ jaḍi-kṛta-matiḥ. By the injunction of the Vedas, people are captivated. "Oh, if I perform this yajña, then next life I'll be elevated to the heavenly planet, Svarga." Svargaloka mem. So madhu-puṣpitāyām. That is also stated in the Bhagavad-gītā. Veda-vada-ratāḥ pārtha nānyad astīti vādinaḥ (BG 2.42). Those who are simply after the formulas of the Veda, they cannot understand. The same example: Even at the present moment, because here is temple, people are attracted. If you simply chant, very few people will come. Very few people will come. Therefore both things are recommended.