SRILA BHAKTISIDDHANTA SARASWATI THAKUR PRABHUPADA
On one occasion the headmaster of the Thakur Bhaktivinode Institute asked Srila Saraswati Thakur,
“So many devotees have given up everything, are staying in the maṭha, and are engaged in devotional service.
Why don’t they improve to the advanced stage?”
Saraswati Thakur answered,
“They have internal worms. They are being eaten up by worms inside. They are taking food but are not getting nourishment because of worms. They are engaging in devotional service, but the advancement is eaten by material desires and secret badbehaviour. So they become weak.”
Remembrance by Sripad Jatisekhar Das, disciple of Srila Bhaktisiddhanta Saraswati Thakur Prabhupada.