Devotee: "Never was there a time when I did not exist, nor you, nor all these kings. Nor in the future shall any of us cease to be (BG 2.12)." Purport: "In the Vedas, in the Kaṭha Upaniṣad, as well as in the Śvetāśvatara Upaniṣad, it is said that..."
Prabhupāda: (correcting pronunciation) Śvetāśvatara. There are many Upaniṣads, they are called Vedas. Upaniṣads are the headlines of the Vedas. Just like in a chapter there is a headline, similarly these Upaniṣads are the headlines of the Vedas. There are 108 Upaniṣads, principal. Out of that, nine Upaniṣads are very important. So out of those nine Upaniṣads, Śvetāśvatara Upaniṣad, Taittireya Upaniṣad, Aitareya Upaniṣad, Īśopaniṣad, Īśa Upaniṣad, Muṇḍaka Upaniṣad, Māṇḍūkya Upaniṣad, Kaṭhopaniṣad, these Upaniṣads are very important. And whenever there is argument on some point, one has to give reference from these Upaniṣads. If one can give reference from the Upaniṣads, then his argument is very strong. Śabda-pramāṇa. Pramāṇa means evidence. Evidence... If you want to gain in your case... Just like you have to give very nice evidence in a court, similarly, according to Vedic culture, the evidence is pramāṇa. Pramāṇa means evidence. Śabda-pramāṇa.