One who will cry for Krsna, he will never come down to the material platform. That crying is not so easy. As Caitanya Mahaprabhu used to cry, He also said, "I am crying for make-show." So crying automatically comes when actually if we are in prema–bhakti. But we have to go that stage gradually, not by imitating.

From Srila Prabhupada's lecture on The Nectar of Devotion — Calcutta, January 25, 1973