So our material knowledge, material science, our material endeavor is very, very insignificant to understand the Absolute Truth. It is almost impossible. You cannot understand even a planet, and what to speak of the Supreme. Therefore in the Śrīmad-Bhāgavatam it is said that vadanti tat tattva-vidas tattvam (SB 1.2.11). Those who are in knowledge of the Absolute Truth, they say that the Absolute Truth is realized in three phases. But they're nondual. How nondual? Just like even if you study the sunshine, it is not different from the sun, because the same quality is there. The temperature and the illumination, two main qualities, in the sunshine you'll find. And in the same way, if you study the sun globe, you'll find the same quality: light, illumination, and temperature. And if you go further, if you study the living entity, you'll find the same thing: temperature and light. But there is difference still, varieties. You cannot say... When the sunlight enters within your room through the window, you cannot say, "I have got the sun now. Sun is within my room." That is nonsense. No. Sun is far, far away, but his energy has entered your room. So much you can say, but if you think that because the sunlight is within the room... Sunlight within your room? Sunlight, if it comes a few millions miles nearer this planet, it will be finished. What about your room? The temperature is so high.
Therefore the Absolute Truth are realized in three phases: Brahman, Paramātmā, and Bhagavān. Brahmeti paramātmeti bhagavān iti śabdyate (SB 1.2.11). Śabdyate means we receive from the Vedic literatures. Śabda-brahma, śabdyate. By sound vibration, by transcendental sound transmission, we understand that the Absolute Truth is realized in three phases. What is that? Brahmeti paramātmeti bhagavān iti śabdyate. So what is the difference between Brahman, Paramātmā, and Bhagavān? That difference is just like the same. If you study, if you become satisfied, "Now I am in the light, sunshine; finished my business," that is Brahman realization. But that is not final. By Brahman realization, you are in the light, that's a fact. You are in illumination, you are in temperature, that's a fact. But if you are satisfied with such temperature and light, then you remain there. And if you are fortunate enough to make further progress, that is Paramātmā—to realize the Supersoul in everyone's heart: in your heart, in my heart, everywhere, all-pervading. Sunshine is also all-pervading. Brahman is also all-pervading. Sarvaṁ khalv idaṁ brahma. Similarly, Paramātmā, the Supersoul, is also all-pervading. Meditation means to realize the Supersoul, and to realize that Supersoul is everywhere. How everywhere? Aṇḍāntara-stha-paramāṇu-cayāntara-stham (Bs. 5.35). The Supersoul is within the aṇḍa. Aṇḍa means brahmāṇḍa, universe, and everybody up to the atom. He's within the atom also. Paramāṇu. Paramāṇu means atom. The Supersoul is within the atom. That is the power of God. He can become bigger than the universe. He can put many millions of universes within His belly. At the same time, He can enter within the atom. Aṇor aṇīyān mahato mahīyān. Mahato mahīyān means greater than the greatest and the smaller than the smallest. So in this way, first realization, Brahman, impersonal. Then next higher realization is Paramātmā, Supersoul. Brahman realization more or less realized by philosophical speculation, and Paramātmā realization is achieved more or less by meditation. But Bhagavān realization is transcendental devotion. That is beyond the philosophical speculation and mental meditation, beyond.