True global unity requires transcending material identity and recognizing our eternal nature as servants of Krishna.Listen — Srila Prabhupada Uvaca
Prabhupāda: My foreign disciples, they could not understand either Hindu or Oriya. So for this movement, I am very much obliged to these American boys. The history of this movement is that my Guru Mahārāja, His Divine Grace Bhaktisiddhānta Sarasvatī Ṭhākura, and before him, Bhaktivinoda Ṭhākura, they had an intense desire to preach Caitanya Mahāprabhu's message throughout the whole world. That was the intense desire of Caitanya Mahāprabhu. pṛthivīte āche yata nagarādi-grāma sarvatra pracāra haibe mora nāma [CB Antya-khaṇḍa 4.126] He wanted it.
Because this is the only message to bring the human society into oneness. There is no other alternative. That is confirmed in the Śrīmad-Bhagavatam: kaler doṣa-nidhe rājann asti hy eko mahān guṇaḥ kīrtanād eva kṛṣṇasya mukta-saṅgaḥ paraṁ vrajet [SB 12.3.51] So this Kali-yuga, as described by our Gaura-Govinda Mahārāja, a bhankara [?] yuga. But there is one opportunity, kīrtanād eva kṛṣṇasya mukta-saṅgaḥ paraṁ vrajet.
This is the message of Śrī Caitanya Mahāprabhu, and a little attempt was made at the age of seventy years. Of course, my Guru Mahārāja asked me... When I was twenty-five years old, I first met him. He asked me to do this task.
But I thought that "Let me adjust my family life, and then I shall do this." But I took it very seriously. But family life, never it was adjusted, so he forced me at the ripe old age to take up this work. So I tried to make an experiment that nobody had done: "Let me try." But I tried sincerely, so by the grace of my Guru... Guru-Kṛṣṇa, they favored me.
When I was on the Commonwealth Jetty, Pier, yes, I was thinking that "Who will hear me? As soon as I shall say to these people that 'No illicit sex, no meat-eating, no intoxication and no gambling,' immediately they will say, 'Please go home. Don't talk here.' " Because I know that. This is their daily life.
But by the grace of Kṛṣṇa they agreed. All these students, all these disciples... I do not accept anyone as my disciple that "You can do whatever you like." No. My first condition is that "You must be sinless." At least you must try to become sinless, because in the Bhagavad-gītā we understand, yeṣāṁ tv anta-gataṁ pāpaṁ janānāṁ puṇya-karmaṇām te dvandva-moha-nirmuktā bhajante mām...
[Bg 7.28] Without being sinless, one cannot make any advance. So Caitanya Mahāprabhu introduced this movement. Ceto-darpaṇa-mārjanam [Cc Antya 20.12]. That is the first installment.