Prabhupāda: When one is freed from material contamination, then one can understand the science of bhakti-yoga. So, some way or other, if we try to understand bhakti-yoga, that is the great science. That is the... To learn. If you actually want to learn something greatest in the scientific world, that is bhakti-yoga. Go on.
Pradyumna: "Of course, in the categories of mystic perfection there are certain processes which the material scientists have not yet been able to develop. For instance, a mystic yogi can enter into the sun planet simply by using the rays of the sunshine. This perfection is called laghimā. Similarly, a yogi can touch the moon with his finger. Though the modern astronauts go to the moon with the help of spaceships, they undergo many difficulties, whereas a person with mystic perfection can extend his hand and touch the moon with his finger. This siddhi is called prāpti, or acquisition. With this prāpti-siddhi, the perfect mystic yogi can not only touch the moon planet, but he can extend his hand everywhere and take whatever he likes. He may be sitting thousands of miles away from a certain place, and if he likes he can take fruit from a garden there. This is called prāpti-siddhi. The modern scientists have manufactured nuclear weapons with which they can destroy an insignificant part of this planet, but by the yoga siddhi known as īśitā one can create and destroy an entire planet simply at will. Another perfection is called vaśitā, and by this perfection one can bring anyone under his control. This is a kind of hypnotism which is almost irresistible. Sometimes it is found that a yogi who may have attained a little perfection in this vaśitā mystic power comes out among the people and speaks all sorts of nonsense, controls their minds, exploits them, takes their money and then goes away. There is another mystic perfection which is known as prākāmya or magic. By this prākāmya power one can achieve anything he likes. For example, one can make water enter into his eye and then again come out from within the eye. Simply by his will he can perform such wonderful activities. The highest perfection of mystic power is called kāmāvasāyitā. This is also magic, but whereas the prākāmya power acts to create wonderful effects within the scope of nature, kāmāvasāyitā permits one to contradict nature—in other words, to do the impossible. Of course, one can achieve great amounts of temporary happiness by achieving such yogic materialistic perfections."
Prabhupāda: Kṛṣṇa is called Yogeśvara. He's also the master of all yogic mystic power. Therefore a bhakta, a true devotee of Kṛṣṇa, he does not endeavor personally to achieve all these yogic mystic power. He depends on Kṛṣṇa, and if there is necessity of exhibiting some yogic power, Kṛṣṇa will show. Kṛṣṇa will exhibit. Yatra yogeśvaraḥ hariḥ. So although Arjuna did not manifest any yogic power, but, by Kṛṣṇa's grace everything was so wonderfully performed in the Battle of Kurukṣetra. Otherwise Arjuna was a, an insignificant warrior in front of Bhīṣma, Karṇa, Dronācārya. This is admitted by Mahārāja Parīkṣit, that it is simply by the grace of Kṛṣṇa that his grandfather came out victorious in front of Bhīṣma, Karṇa, Dronācārya and similar great heroes. So if any heroic action has to be shown, the devotee does not endeavor separately for showing such heroic manifestation. Because he depends on Kṛṣṇa, if there is need, then Kṛṣṇa will show. Nimitta-mātraṁ bhava savya-sācin. Actually, the battlefield was conducted by Kṛṣṇa, and He owned the victory, but officially, historically, it is said that Arjuna owned the victory. So a devotee does not require to acquire all the talents, how to own victory. Kṛṣṇa will do that business. A devotee has only to surrender sincerely unto the lotus feet of Kṛṣṇa. Then everything will be done wonderfully.
Thank you very much. (end)