Śrīla Prabhupāda: Nothing can be changed. But according to the time, you have to apply the principles properly. For instance, in Kali-yuga the smṛti order is kīrtanād eva kṛṣṇasya mukta-saṅgaḥ paraṁ vrajet: to obtain spiritual liberation, one must chant the holy name of the Lord, Hare Kṛṣṇa. So you have to do this. For instance, a doctor may order, “In the morning, take this medicine; in the evening, take that medicine.” It is not a change of the doctor’s orders. It is simply that according to the time, the doctor’s orders call for a particular medicine. But the particular medicine is recommended by the doctor, not by your whims. Śruti and smṛti cannot be changed, but they may recommend a particular process at a particular time. So there must be adherence to both śruti and smṛti – to scriptural authority. You cannot modify.

Puṣṭa Kṛṣṇa: There is no question, then, of – as the magazine puts it – “new smṛti.”

Śrīla Prabhupāda: No. New smṛti? They may take it as “new smṛti,” but smṛti is smṛti – it is not new. In any spiritual statement you have to give references to śruti and smṛti. Otherwise, it is not valid. There must be veda-pramāṇa, śabda-pramāṇa: evidence from the Vedas and from the explanatory Vedic literature. Otherwise, there is no evidence. Your statement is not valid: you cannot change the original śruti-smṛti. But you have to take their particular recommendation for the particular time, just as Kṛṣṇa Caitanya Mahāprabhu did when He urged His followers to heed the injunction of Bṛhan-nāradīya Purāṇa [3.8.126]:

harer nāma harer nāma

harer nāmaiva kevalam

kalau nāsty eva nāsty eva

nāsty eva gatir anyathā

“Chant the holy name, chant the holy name, chant the holy name of Kṛṣṇa. In the present age of quarrel and anxiety, there is no other way to attain God realization, no other way, no other way.” So śruti-smṛti-pramāṇa – citing evidence from the Vedas and the corollary literature – is the only method for making a spiritual statement. You have to take it. ••• if you’d like to find links to read for free or purchase: sravanamdiaries.com/civilization-and-transcendence