Srila Prabhupada in his wonderful exchange with Professor J. F. Staal: Professor of Philosophy and of South Asian Languages University of California Berkeley, California in January 1970:
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 sastras 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 easy to see that they have advanced in their transcendental realization further than any philosophers, religionists, yogis, karmis, etc.
We have to accept everything favorable to the circumstances. Rejection of other methods in a particular circumstance does not mean that the rejected ones are not bona fide. But for the time being, taking into consideration the age, time, and object, methods are sometimes rejected even though bona fide. We have to test everything by its practical result. By such a test, in this age the constant chanting of the Hare Krsna maha-mantra undoubtedly proves very effective.
A. C. Bhaktivedanta Swami
THE RITVIK SYSTEM IS A PRACTICAL SOLUTION GIVEN BY SRILA PRABHUPADA TAKING INTO CONSIDERATION THE AGE,TIME AND OBJECT.