Krsna as the source of love Himself is Caitanya. The two aspects of the Divine Personality are not complimentary but are identical. Sri Krsna is eternally served by the denizens of Vraja. Krsna is thus served in a visible form in the Dvapara Age in this world. Sri Krsna is also served in a visible form in Kali-yuga. He is served as Sri Caitanya by the denizens of Navadvipa which is identical with the white island [Svetadvipa] of the scriptures. The servants and associates of Sri Krsna Caitanya are identical with those of Sri Krsna. The service of Sri Krsna Caitanya alone is attainable in the Kali age. Those who aspire for the service of Krsna in this age have no other alternative but to serve Sri Krsna Caitanya.
Srila Bhaktisiddhanta Sarasvati Thakura, Harmonist