By knowledge, so-called knowledge, you cannot understand Kṛṣṇa. Therefore the so-called scientists, they are in doubts. It is not possible. If you think that "I shall speculate. Through knowledge, I shall understand God," that is not possible. Because God is unlimited; your knowledge is limited. How you can know God? How the bhaktas—they are not scientists, not educated very much—how they can know? Yes, they can know. How? That is stated in the Bhagavad-gītā:
- teṣāṁ satata-yuktānāṁ
- bhajatāṁ prīti-pūrvakam
- dadāmi buddhi-yogaṁ tam...
- (BG 10.10)
Dadāmi buddhi-yogaṁ tam. Tam means "unto Him." Whom? Bhajatāṁ prīti-pūrvakam. Those who are engaged in devotional service with love and faith. Because God is within you. You haven't got to search out where is God. Īśvaraḥ sarva-bhūtānām, hṛdy antaḥ-sthaḥ (BG 18.61).