An excerpt from a lecture entitled "The Jewel Book":
"Sri Gita-govinda is a 'jewel book' brought by Sri Caitanya Mahaprabhu. We all know that Sri Jayadeva Gosvami has written this beautiful Gita-govinda, but without Sri Caitanya Mahaprabhu it would have remained locked like a pearl in the oyster shell or a jewel in a locked case. Sri Caitanya Mahaprabhu manifested the glories of Sri Gita-govinda. Just as without Srila Rupa Gosvami no one would have known the inner moods of Sri Caitanya Mahaprabhu, similarly, by Sri Caitanya Mahaprabhu relishing the moods of Sri Gita-govinda its glories became manifest for the whole world. I have explained this very high-class philosophy, but only rare devotees in this world can understand it. I have called you here only to give you this."