Prabhupāda: Now, God conscious means understanding. Without understanding, how there can be God consciousness?
Lord Brockway: And you, you may easily have a person who is very God conscious, beautiful in their own lives, beautiful to all the group around them, who have no understanding of the problems of the world at all.
Prabhupāda: That is not perfect God conscious. That is partial. Perfect consciousness means full understanding also. That is perfect God consciousness. Yasmin vijñāte sarvam evaṁ vijñātaṁ bhavati (Muṇḍaka Upaniṣad 1.3). This is the Vedic injunction. If you understand only God, then you understand everything. But if he does not understand everything rightly, that means he's not fully understanding God. This is the . . . if, as you say, that a man is fully God conscious but he cannot do this, cannot do that, that means his understanding of God consciousness is still lacking. It is not full understanding.
A full understanding of God consciousness means he's a perfect man. He's a perfect man. He'll never commit anything mistake. Because he's guided. Teṣām . . . what is that? Bhajatāṁ prīti-pūrvakam, buddhi-yogaṁ dadāmi tam . . .
(aside) Find out.
A God conscious person is getting direct instruction from God. How it can be defective? It cannot be. Practical. But if one is defective, he's not yet fully God conscious.