Sarva-kāraṇa-kāraṇam means the cause of all causes. They have searched out. Scientifically they have searched out that Kṛṣṇa is the origin. In Śrīmad-Bhāgavatam also it is described, kṛṣṇas tu bhagavān svayam (SB 1.3.28).
There may be different kinds of Bhagavān, or the Personality of Godhead—not different kinds, but different expansion, extension—but Kṛṣṇa is the origin. Kṛṣṇas tu bhagavān svayam. The expansion of Kṛṣṇa may be understood just like a person, he is, at home, a father, a husband, like that, and when he's office, he's boss, or when he's clerk, he's secretary.
In this way, a man may be in different position, in different circumstances, but the man is the same. Similarly, Kṛṣṇa, the original Personality of Godhead, might have assumed the form of Viṣṇu, Nārāyaṇa, Govinda, so many. But this original form is Kṛṣṇa. Kṛṣṇas tu bhagavān svayam.
And in the Bhagavad-gītā also Kṛṣṇa explains Himself, ahaṁ sarvasya prabhavaḥ (BG 10.8):
"I am the origin of everyone." Mattaḥ sarvaṁ pravartate: "Everything emanates from Me, all the energies." Just like from the sun globe the energies are coming out incessantly just like flows of water, and everything is being created in this material world through the sunshine, similarly, the shining principle which is emanating from Kṛṣṇa, which is known as brahma-jyotir, is the origin of everything. So kṛṣṇas tu bhagavān svayam (SB 1.3.28). (pause)
So this Kṛṣṇa science is a very great science, and Bhagavad-gītā explains this Kṛṣṇa science very nicely, the origin of everything. And we should take advantage of this great book of knowledge, Bhagavad-gītā. It is already known in your country, Bhagavad-gītā; there are many editions. But unfortunately, sometimes Bhagavad-gītā is misinterpreted and people are misled to understand the origin. Therefore we have the opportunity to publish the Bhagavad-gītā as it is. We have entrusted the matter to Messrs. Macmillan Company. They are going to publish the book next month. So try to understand Bhagavad-gītā as it is, without any interpretation. Then you will understand the origin.
So the process of understanding Bhagavad-gītā is very nicely stated in the Bhagavad-gītā itself. And in our disciplic succession the Ṣaḍ-gosvāmī, the six Gosvāmīns, of whom I offered a prayer in the beginning, vande rūpa-sanātanau raghu-yugau śrī-jīva-gopālakau . . . so we are publishing another book, Teachings of Lord Caitanya. So the printing is complete. That book also will come next month. So I shall request some of you to read the teachings to Lord . . . teaching to Sanātana Gosvāmī. Will somebody come here? You'll read? Yes. Sit down there.