Looking at the Cultural Background
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of Lord Caitanya Mahāprabhu, who is nondifferent from Kṛṣṇa, and His version according to Vedic scripture is that in this age this chanting is the only solution for all problems of life. And that is actually being shown by practical experience.
Recently there was a big procession of our students in Berkeley on the Advent Day of Lord Caitanya, and the public has remarked as follows: “This crowd of men is not like others, who assemble to break windows and create havoc.” This is also confirmed by the police in the following words: “Members of the Kṛṣṇa consciousness movement cooperated fully with the police, and their efforts to maintain peaceful order throughout the parade were so successful that only minimal police involvement was required.”
Similarly, in Detroit there was a big peace march, and our men were appreciated as “angels” in the crowd. So this Kṛṣṇa consciousness movement is actually needed at the present moment as the panacea for all kinds of problems in human society.
Other quotations will not act very appreciably at this time. In a drugstore there may be many medicines, and all may be genuine, but what is required is that an experienced physician prescribe medicine for a particular patient. We cannot say in this case, “This is also medicine, and this is also medicine.” No. The medicine which is effective for a particular person is the medicine for him— phalena paricīyate .
Yours very sincerely, A. C. Bhaktivedanta Swami
Final Note by Śrila Prabhupāda
In a court of justice two lawyers put forward their respective relevant arguments taken from the authorized law books to decide a point, but it is up to the judge to decide the case in favor of one of the litigants. When the opposing lawyers put forward their arguments, both of them are legal and bona fide, but the judgment is given as to which argument is applicable to the particular case.
Lord Caitanya gives His judgment on the authority of  śāstras  that the chanting of the holy names of the Lord is the only means to elevate one to the transcendental platform, and actually we can see it is effective. Each and every one of our students who has seriously taken to this process may be examined individually, and any impartial judge will find it