Sattva-guṇa is the light of knowledge.
Māyā, this illusory energy, is covering with the curtain. Just like we are seeing the Deity, but if there is a curtain, we cannot see. Similarly, there is a curtain which is illusory energy, māyā. Big, big scientists, they cannot see what is behind this material nature. They cannot understand. Because the māyā, this wonderful material energy, is acting in such a big curtain, they cannot understand that beyond this there is something else. They cannot understand. Māyā-javanikā ācchannam. Illusory energy. They are thinking this material energy working, that is everything. Nothing beyond this. The whole world is covered. This is one side. And the other side: ajñā.
Māyā-javanikācchannam ajñā... These materialistic persons, they are ajñā, means they have no sufficient knowledge. Unless one develops the light of knowledge, sattva-guṇa... Sattva-guṇa is the light of knowledge. Rajo-guṇa and tamo-guṇa is darkness. Ignorance and passion. In this stage one cannot understand what is Kṛṣṇa, what is God. Ajñā. Rajas-tamo-bhāvāḥ (SB 1.2.19). As we have discussed in Bhagavad, Śrīmad-Bhāgavatam, rajas-tamo-bhāvāḥ, those who are infected with the two kinds of material modes, means rajo-guṇa and tamo-guṇa, they are simply busy, kāma and lobha. They are busy only... Those who are passionate, they are simply busy for sense gratification, and those who are in ignorance, in darkness, they have no eyes to see.