Prabhupāda: The dog has got the same legs, hands or mouth and tongue, and so on, so on, in a different way. But it has no capacity to hear about spiritual advancement of life. Therefore the human body should be engaged not simply for sense gratification. Kāmasya nendriya-prītir (SB 1.2.10). Find out this verse. Jīvasya tattva-jijñāsā. This is the business, tattva-jijñāsā. Tattva-jijñāsā means to inquire about the Absolute Truth. That is the only business.
Puṣṭa Kṛṣṇa: Kāmasya nendriya-prītir labho jīveta yāvatā (SB 1.2.10).
Prabhupāda: Labho jīveta yāvatā. You can satisfy senses as far as it is required to live. That's all. Jīvasya tattva-jijñāsā. The only business is to inquire about the Absolute Truth. Athāto brahma jijñāsā. That is the only business.
Mr. Loomis: For this machine?
Prabhupāda: All other business subordinate. That is only, because you have got this body, material body, it requires little rest, little sense gratification, little eating, little sleeping. We don't say stop it completely. That is not possible. Yuktāhāra-vihārasya, as far as it is required. As little as possible. That is spiritual advancement. If we make our progressive life engaged in understanding Kṛṣṇa instead of devoting in these unnecessary things, that is real life. That is real human life. The Vedic civilization is that. We find Vyāsadeva writing so exalted books, but life was very simple. People are, now in the modern civilization, people are accustomed only to the comforts of the body. Not for spiritual advance. That is the defect of modern civilization.