Prabhupāda: God means the controller. Everywhere we have got some controller. So... But you will find there is another controller over the controller. So if you go on searching one after another, controller and the supercontroller, and, or the next controller, next controller, in this way, when you come to a place when the controller is absolute, there is no other controller, He is God.
Interviewer: Thank you caller. That's... Something... I get the impression that all the calls today are people within Kṛṣṇa consciousness. I would like to hear some other people with questions here. Caller, you're on the air with the Swami on KGO.
Caller: Yes. Swami, you say you have to know yourself. Now, how does a person go about knowing when he knows himself, who he is and what he is. In other words, when does he reach the stage where he says, "Hah! I know where I am and what I am."
Prabhupāda: Yes, there are two different processes of acquiring knowledge. One process is to research oneself by his own endeavor, by his limited sense speculation. And another process is to know from the authority. Just like deductive process, we say, man is mortal. This knowledge is received from higher authorities, just like our teacher or parents, we understand that man is mortal. Another process is one can make research whether actually man is mortal.