We can begin to experience this bliss by following the prescribed methods of devotional service. When we see the deity we can gradually realize how Krsna is smiling, playing on His flute, and enjoying the company of Srimati Radharani. Then we also have to hear about Krsna. These two processes will increase in such a way that we will automatically become great devotees, anicchato me gatim anvim prayunkte. This is actually a scientific method. It is not imagination.

From Srila Prabhupada's lecture on Srimad-Bhagavatam 3.25.36, Bombay, 5 December, 1974