First one must control his speaking power. Every one of us has the power of speech; as soon as we get an opportunity we begin to speak. If we do not speak about Kṛṣṇa consciousness, we speak about all sorts of nonsense. A toad in a field speaks by croaking, and similarly everyone who has a tongue wants to speak, even if all he has to say is nonsense. The croaking of the toad, however, simply invites the snake: "Please come here and eat me." Nevertheless, although it is inviting death, the toad goes on croaking. The talking of materialistic men and impersonalist Māyāvādī philosophers may be compared to the croaking of frogs. They are always speaking nonsense and thus inviting death to catch them. Controlling speech, however, does not mean self-imposed silence (the external process of mauna), as Māyāvādī philosophers think. Silence may appear helpful for some time, but ultimately it proves a failure. The meaning of controlled speech conveyed by Śrīla Rūpa Gosvāmī advocates the positive process of kṛṣṇa-kathā, engaging the speaking process in glorifying the Supreme Lord Śrī Kṛṣṇa. The tongue can thus glorify the name, form, qualities and pastimes of the Lord. The preacher of kṛṣṇa-kathā is always beyond the clutches of death. This is the significance of controlling the urge to speak.
The restlessness or fickleness of the mind (mano-vega) is controlled when one can fix his mind on the lotus feet of Kṛṣṇa. The Caitanya-caritāmṛta (CC Madhya 22.31) says:
- kṛṣṇa-sūrya-sama; māyā haya andhakāra
- yāhāṅ kṛṣṇa, tāhāṅ nāhi māyāra adhikāra
Kṛṣṇa is just like the sun, and māyā is just like darkness. If the sun is present, there is no question of darkness. Similarly, if Kṛṣṇa is present in the mind, there is no possibility of the mind's being agitated by māyā's influence. The yogic process of negating all material thoughts will not help. To try to create a vacuum in the mind is artificial. The vacuum will not remain. However, if one always thinks of Kṛṣṇa and how to serve Kṛṣṇa best, one's mind will naturally be controlled.
Similarly, anger can be controlled. We cannot stop anger altogether, but if we simply become angry with those who blaspheme the Lord or the devotees of the Lord, we control our anger in Kṛṣṇa consciousness. Lord Caitanya Mahāprabhu became angry with the miscreant brothers Jagāi and Mādhāi, who blasphemed and struck Nityānanda Prabhu. In His Śikṣāṣṭaka Lord Caitanya wrote, tṛṇād api sunīcena taror api sahiṣṇunā: "One should be humbler than the grass and more tolerant than the tree." One may then ask why the Lord exhibited His anger. The point is that one should be ready to tolerate all insults to one's own self, but when Kṛṣṇa or His pure devotee is blasphemed, a genuine devotee becomes angry and acts like fire against the offenders. Krodha, anger, cannot be stopped, but it can be applied rightly. It was in anger that Hanumān set fire to Laṅkā, but he is worshiped as the greatest devotee of Lord Rāmacandra. This means that he utilized his anger in the right way. Arjuna serves as another example. He was not willing to fight, but Kṛṣṇa incited his anger: "You must fight!" To fight without anger is not possible. Anger is controlled, however, when utilized in the service of the Lord.
As for the urges of the tongue, we all experience that the tongue wants to eat palatable dishes. Generally we should not allow the tongue to eat according to its choice, but should control the tongue by supplying prasāda. The devotee's attitude is that he will eat only when Kṛṣṇa gives him prasāda. That is the way to control the urge of the tongue. One should take prasāda at scheduled times and should not eat in restaurants or sweetmeat shops simply to satisfy the whims of the tongue or belly. If we stick to the principle of taking only prasāda, the urges of the belly and tongue can be controlled.
In a similar manner, the urges of the genitals, the sex impulse, can be controlled when not used unnecessarily. The genitals should be used to beget a Kṛṣṇa conscious child, otherwise they should not be used. The Kṛṣṇa consciousness movement encourages marriage not for the satisfaction of the genitals but for the begetting of Kṛṣṇa conscious children. As soon as the children are a little grown up, they are sent to our Gurukula school, where they are trained to become fully Kṛṣṇa conscious devotees. Many such Kṛṣṇa conscious children are required, and one who is capable of bringing forth Kṛṣṇa conscious offspring is allowed to utilize his genitals.