Su-medhasaḥ, this Sanskrit word, means intelligent persons. Medhas. Medhas means brain substance, one who has got very good brain substance. The brain substance... According to psychology, there is difference of brain substance. Not the brain substance equally, of equal weight, in every man's brain. You know, you are all educated students, psychology students. In our boyhood when we were a student in psychology class, Dr. Urquhart explained this brain substance. The man has got the highest brain substance—not all—up to sixty-four ounce. And woman has got the highest up to thirty-six or thirty-four. Of course, we are not discussing that point. Our movement is a spiritual movement, Kṛṣṇa consciousness. That is beyond brain. Indriyāṇi parāṇy āhur indriyebhyaḥ paraṁ manaḥ, manasas tu parā buddhir (BG 3.42). So there are different platforms and status of consciousness. Bodily consciousness means sensual consciousness. Above that, there is mental consciousness, speculative, philosophical, poetic. Above that, intellectual consciousness. And Kṛṣṇa consciousness—above intellectual consciousness.
So the recommendation is... That was a topic between Mahārāja Nimi and great sages called nine sages, navayogindra. Nava means nine. Yogindra means mystic yogis. So they were talking, and Mahārāja Nimi questioned the different incarnations in different ages. And Camasa Muni was replying. In that replying, he said that in the Kali-yuga, in this age... This age called Kali-yuga. This Kali-yuga has begun about five thousand years ago. So he said, "In the Kali-yuga the process of self-realization is saṅkīrtana movement." Saṅkīrtana. Saṅkīrtana means bahudhā, bahubhir militvā. When congregational chanting is done, that is called saṅkīrtana. So in this age the saṅkīrtana movement is recommended. There is no question of what is your religion, what is my religion. Everyone can join in this saṅkīrtana movement, without any discrimination. That is the recommendation. Yajñair saṅkīrtana. This is also yajña, sacrifice. You are sacrificing some time, your valuable time, in joining with us to perform the saṅkīrtana movement. That is a sacrifice. And sacrifice means to please the Supreme Personality of Godhead. Yajña. Yajña is the name of the Supreme Personality of Godhead. In the Bhagavad-gītā it is said, yajñārthāt karma anyatra karma-bandhanaḥ. Whatever you have to act, you have to act on the basis of pleasing the Supreme Lord.