Śrīla Rūpa Gosvāmī, the author of  Śrī Upadeśāmṛta  and numerous other volumes of Vaiṣṇava philosophy. He is the chief literary disciple of Śrī Kṛṣṇa Caitanya, the pioneer of the powerful  saṅkīrtana  movement which began in India five hundred years ago.