When Einstein says the measurement of intelligence is the ability to change, he makes an excellent point , the essence of all change is to change one’s conditioned nature into one’s spiritual nature , which takes intelligence.
Albert Einstein also says religion without science is blind and science without religion is lame.
If one can understand why he said that, then one is well on the way to intelligently change one’s outlook and worldview.
Srila AC Bhavtivedanta Swami, through his litratures and translations of the Srimad Bhagavatam, explains all , and especially the path of change….

Now the question comes , it’s not so easy to change , old thinking and old habits die hard . Remembering the Vedic standpoint that the consciousness is eternal and has had many many dips into the material energies and has become covered over and over again , rejuvenation of one’s original spiritual nature would take some doing .

It’s a fact, and Krishna in the Bhagavad Gita confirms this , Arjuna says, ” It’s more difficult to control the mind and our conditioned nature that controlling a gale force wind “

Krishna agrees it’s difficult ” But by constant practice and detachment it’s done “

Krishna says, “I will help you. I will give you the intelligence with which you can come to me . Simply hear my messages “

And Sri Caitanya Mahāprabhu says in this age”  I will make it easy simply chant My Holy names with sincerity ”   ” Associate with pure devotees hear and read the litratures of the param para acaryas and the Holy Names will give you a higher taste of spiritual bliss ”  The windows of the spiritual worlds can open through the Names and litratures of Srila Rupa Goswami, Srila Ragganatha das Goswami and their followers in Gaudiya Vaisnava param para .

So, it’s not a lone process, but with Bhakti Devi injected into the heart by the devotees of Sri Caitanya Mahāprabhu . This process is simply for the simply hearted sincere person,  and even for rouges,  by association, purification occurs in time.
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