Srila Prabhupada

Śivānanda, one of His very exalted devotee, he was taking care of all devotees who were coming to Caitanya Mahāprabhu to visit during Ratha-yātrā. So his wife came and offered Caitanya Mahāprabhu obeisances, and he saw that the wife is pregnant. So immediately asked, "Śivānanda, your wife is pregnant?" "Yes". "All right, when she gives birth to a child, you keep his name like that." Now see. One man, simply he saw with lusty desire to a young man (woman); he was rejected. And one man has his wife pregnant; He adored him: "That's all right." So sex life is not forbidden in this movement, but hypocrisy is forbidden. If you become hypocrite, then there is nowhere to . . . that is Caitanya Mahāprabhu's teaching. Choṭa Haridāsa, he presented himself as a brahmacārī and he was looking after a young woman. Then He understood, "He is a hypocrite. Reject him." And Śivānanda Sena, he was gṛhastha. Gṛhastha must have children. What is wrong there? He said, "Yes, my remnants of foodstuff should be given." This is Caitanya Mahāprabhu's movement.
So our request is, don't be hypocrite.
(760523 - Lecture SB 06.01.23 - Honolulu)

Caitanya Mahāprabhu, He introduced. Saṅkīrtanaika-pitarau. Gaura and Nityānanda is the father of the saṅkīrtana movement. Therefore Vṛndāvana dāsa Ṭhākura has offered his prayer, saṅkīrtanaika-pitarau ājānu-lambita-bhujau kanakāvadātau, saṅkīrtanaika-pitarau kamalāyatākṣau (CB Ādi-khaṇḍa 1.1), vande mahā-puruṣa te caraṇāravindam. So Kṛṣṇa is teaching. Kṛṣṇa is so kind. He's personally teaching, that is, "Perform yajña." He's personally chanting, dancing, Caitanya Mahāprabhu. The picture is in our front. Personally He's teaching us, "Perform this yajña, you rascal, and you'll get everything. You'll get everything." Now, where is the proof? The proof is Kṛṣṇa consciousness movement. We are simply chanting Hare Kṛṣṇa mahā-mantra and spending crores of rupees.
(740928 - Lecture SB 01.08.18 - Mayapur)

Vṛndāvana dāsa Ṭhākura is one of the ācāryas. He has written Caitanya-Bhāgavata. As there is Śrīmad-Bhāgavata, he has written Caitanya-Bhāgavata. Perhaps you have heard the name. So his opinion is, muci haya śuci haya yadi kṛṣṇa bhaje.
Muci and śuci, just opposite. Muci means the most nasty cobbler. He eats everything and does all nonsense. He is called muci. Muci means cobbler. In India, when a cow or bull dies, these muci class are called to take away the carcass. So they take it away and they take out the skin and tan it for . . . this is the original system of shoe-making. And make some shoes and sell in the market. But not by killing cows. When it dies. So this business is done by the muci class. And they take the flesh also. After taking out the skin, the flesh they take. Therefore they are considered very low class, muci. And śuci means brahmin.
So Vṛndāvana dāsa Ṭhākura says, muci haya śuci haya. A cobbler, muci, can become a śuci, yadi kṛṣṇa bhaje, if he's Kṛṣṇa conscious. That's all. If he's Kṛṣṇa conscious, never mind he is a cobbler, he becomes immediately brahmin. Muci haya śuci haya yadi kṛṣṇa bhaje. Śuci haya muci haya yadi kṛṣṇa tyaje. And even if he's born in a brahmin family, if he gives up Kṛṣṇa consciousness, he's immediately cobbler.
(break) So don't lose this opportunity. Always remember Kṛṣṇa, Kṛṣṇa, Kṛṣṇa. (laughter) Don't become cobbler. (break)
(691226 - Lecture Initiation - Boston)

Similar devotee was Vāsudeva Datta, Lord Caitanya's . . . he requested the Lord that, "You have come. Kindly deliver all these people now present on this earth, and take them to Vaikuṇṭha. And if You think that they are so sinful that they cannot be delivered, then please transfer all their sins unto me. I shall suffer. You take them." This is Vaiṣṇava, "So for all their sins I shall suffer. You take them."
This philosophy is also expressed in Bible, Lord Jesus Christ, that he agreed to suffer himself for the sins of the all people. But that does not mean that Jesus Christ or Vāsudeva Datta should make a contract for ourself, and we shall go on committing sins. This is most heinous proposal. A Vaiṣṇava and a devotee suffers for the whole humanity, human race.
But that does not mean that human race or the particular follower should take advantage of this facility and go on committing sins. That is not a good proposal. They should take rather seriously that, "Lord Jesus Christ or Vāsudeva Datta who has suffered for us so much, we shall stop committing sins now." That is sane proposal. Otherwise, if I think, "Well, there is Vāsudeva Datta and Lord Jesus Christ. He will suffer for us and let us go on merry-making. That's all . . ." A most heinous life.
Anyway, everyone is responsible for his sinful activities. That's a fact.
(710724 - Lecture SB 06.01.08-13 - New York)

So one devotee of Caitanya Mahāprabhu, Vāsudeva Datta, he prayed to Caitanya Mahāprabhu, "Sir, You have come. You deliver all these fallen souls, conditioned souls within the universe. Your kindness can do that. And if You think they are so sinful they cannot be delivered, then I am prepared to take all their sins. I shall remain here alone to suffer. You kindly deliver them." This is Vaiṣṇava desire. Vaiṣṇava is not selfish. He is . . . Vaiṣṇava's real qualification is para-duḥkha-duḥkhī: he is unhappy by seeing others unhappy. Personally he has no unhappiness. Why he should be unhappy? He has got Kṛṣṇa. But as he has become happy by getting Kṛṣṇa, so he wants others also to become happy, and therefore he tries to spread Kṛṣṇa consciousness. This is called para-duḥkha-duḥkhī. He knows that all these conditioned souls, they are, I mean to say, rotting in this material world and suffering. And the only remedy is Kṛṣṇa consciousness. That's a fact.
(750115 - Lecture SB 03.26.40 - Bombay)

Because every name being identical with God, every name of God is as powerful as God. As powerful, because identical. Identical. Therefore every name has got the same power and potency as the Supreme Person, God, has got. Nāmnām akāri bahudhā nija sarva śaktis. Nija sarva śaktis: all potencies are there. Tatrārpitā. There is; it is already endowed with all the potencies.
So Caitanya Mahāprabhu says, etādṛśī tava kṛpā bhagavān mamāpi durdaivam īdṛśam ihājani nānurāgaḥ: "My dear Lord, You have sent in this age Your name, which is full of potency, as much potencies You have got. Still, I am so unfortunate that I cannot chant even Your holy name." It is so nice. You haven't got to do anything; simply try to chant the holy name of God. Then gradually everything will evolve within you, because within you everything is there. Simply you have to accept the process and everything will come out. Ceto-darpaṇa-mārjanam (CC Antya 20.12). Our misunderstanding is due to dirty things within our hearts. So first benefit of chanting Hare Kṛṣṇa mahā-mantra will be that all the dirty things within your heart will be cleansed.
(730216 - Lecture BG 07.01 - Sydney)