(Click to enlarge photo of His Divine Grace Srila Prabhupada)
"It is very difficult to understand the secret of Kṛṣṇa consciousness, but one who advances by the instruction of the previous ācāryas and follows in the footsteps of his predecessors in the line of disciplic succession will have success. Others will not. Śrīla Narottama dāsa Ṭhākura says in this connection, chāḍiyā vaiṣṇava-sevā nistāra peyeche kebā: 'Unless one serves the spiritual master and ācāryas, one cannot be liberated.' Elsewhere he says:
ei chaya gosāñi yāṅra—mui tāṅra dāsa
tāṅ-sabāra pada-reṇu mora pañca-grāsa
'I simply accept a person who follows in the footsteps of the Six Gosvāmīs, and the dust of such a person's lotus feet is my food.'"