Sri Chaitanya Mahaprabhu showed by his personal life the validity of the doctrines of devotion described in Srimad Bhagavata. Holding Achintya-Bheda-bheda or identity-in-difference to be the nature of the Ultimate Reality whom he called Sri Krishna, Chaitanya demonstrated how Bhakti is the sure way to higher spiritual development.
When we have become free, we need not go mad and throw up society and rush off to die in the forest or the cave; we shall remain where we were, only we shall understand the whole thing.
-Swami Vivekananda