We have often heard the phrase "love of Godhead." How far this love of Godhead can actually be developed can be learned from the Vaiṣṇava philosophy. Theoretical knowledge of love of God can be found in many places and in many scriptures, but what that love of Godhead actually is and how it is developed can be found in the Vaiṣṇava literatures. It is the unique and highest development of love of God that is given by Caitanya Mahāprabhu.
Even in this material world we can have a little sense of love. How is this possible? It is due to the presence of our original love of God. Whatever we find within our experience within this conditioned life is situated in the Supreme Lord, who is the ultimate source of everything. In our original relationship with the Supreme Lord there is real love, and that love is reflected pervertedly through material conditions. Our real love is continuous and unending, but because that love is reflected pervertedly in this material world, it lacks continuity and is inebriating. If we want real, transcendental love, we have to transfer our love to the supreme lovable object—Kṛṣṇa, the Supreme Personality of Godhead. This is the basic principle of Kṛṣṇa consciousness.