Q: The devotees had preached to me that the Absolute Truth, which I, from my reading in yoga philosophy, impersonally called "universal presence," was actually Krsna, the Supreme Personality of Godhead, and His consort, Radharani. How is it that this universal presence which is humanly inconceivable, how can it have the form of Radha and Krsna?"
A: Srila Prabhupada very distinctly answered, “By His mercy.” But then he spoke loudly, “You cannot make the sun rise, and similarly you cannot make God appear before you to answer your doubts! But you just associate with these nice boys and girls here, chant this Hare Krsna mantra, eat krsna-prasadam, study my books scrutinizingly, and engage yourself in a little service, and then the Lord will reveal Himself to you from within your heart, in His own time, by His own sweet will, with all His name, fame, form, pastimes, paraphernalia, and entourage.”
From "Prabhupada-lila" by HH Satsvarupa dasa Goswami