jnani jivan-mukta-dasa painu kari, mane
vastutah buddhi 'suddha' nahe krsna-bhakti vine
jnani—the speculative philosophers; jivan-mukta-dasa—the stage of liberation even while in this body; painu—I have gotten; kari'-taking; mane—considers; vastutah—factually; buddhi—intelligence; suddha—purified; nahe—not; krsna-bhakti vine—without devotional service to Krsna.
"There are many philosophical speculators [jnanis] belonging to the Mayavada school who consider themselves liberated and call themselves Narayana. However, their intelligence is not purified unless they engage in Krsna's devotional service.
Link to this page: http://prabhupadabooks.com/cc/madhya/22/29