Prabhupada's lecture - Śrīmad-Bhāgavatam 1.8.42 - Mayapura, October 22, 1974
Bahir-artha-māninaḥ means they are thinking, "By utilizing this external energy, material world, we shall be happy." Na te viduḥ svārtha-gatiṁ hi viṣṇum [SB 7.5.31]. They do not know that, especially for the human being, the destination is to know Kṛṣṇa. Vedaiś ca sarvair aham eva vedyaḥ [Bg. 15.15]. All these Vedic literatures, all these philosophy, science and everything... That is the verdict of Śrīmad-Bhāgavatam, yad uttama-śloka-guṇānuvarṇanam [SB 1.5.22]. You may be talented in so many ways. You may be very big man, politician or philosopher or chemist or physicist. So many we are; we are occupied. So why you should become big man? What is the purpose? The purpose is to understand Kṛṣṇa. Intelligent. So whatever talent you have got, it doesn't matter. Whatever you may be.
You may be engineer. But if you are intelligent actually, through engineering, you'll describe Kṛṣṇa, how Kṛṣṇa is the greatest engineer so that He's keeping all the planets floating in the air. That is engineer. You cannot do it. He is keeping... Gām āviśya [Bg. 15.13]. He has said. Aham ojasā dhārayāmi, Kṛṣṇa says. So we have to understand Kṛṣṇa like that. Kṛṣṇa says like that, "I am keeping all these planets floating." Now, if you are a physicist, then you try to understand how Kṛṣṇa is keeping them floating. That is your perfection. That is your perfection. If you remain a physicist or chemist and don't understand Kṛṣṇa, it is a waste of time. It is waste of time.