Caitanya Mahaprabhu is very practical, that “I want to give krsna-prema. One should be ecstatic, emotional in krsna-prema. One shall cry for Krsna.” And He taught everyone by His practical example how He was mad after Krsna. Govinda-virahena me. Sunyayitam jagat sarvam govinda-virahena me. This is krsna-prema: without Krsna, one should see everything vacant. This is Radharani’s prema.

But that is not possible for ordinary human being. It might be possible for Caitanya Mahaprabhu and few devotees. Just like His immediate disciples, the six Gosvamis, they were also following the same principle. In the Vrndavana the six Gosvamis used to live. But they were seeking Krsna, becoming mad.

he radhe vraja-devike ca lalite he nanda-suno kutah
sri-govardhana-padapa-tale kalindi-vane kutah
ghosantav iti sarvato vraja-pure khedair maha-vihvalau
vande rupa-sanatanau raghu-yugau sri-jiva-gopalakau

So they were mad after Krsna: “Where is Krsna?” They never said, “We have seen Krsna.” And Caitanya Mahaprabhu also, He said, “I was dreaming of Krsna, and why you awake Me? I have lost the chance.” In this way they were making bhajana. This is called viraha-bhajana, viraha-bhajana, separation. That is very recommended process. So we should be awakened, awaken our consciousness, Krsna consciousness, in such a way that being separated from Krsna, we shall become mad after Him. This is called krsna-prema. That prema was being distributed by Caitanya Mahaprabhu. And He is still distributing.

Srila Prabhupada, Talk on Srimad-Bhagavatam 3.25.30 – November 30, 1974,
Bombay