Therefore, any sensible man who is above the average man with a poor fund of knowledge must constantly remember the Personality of Godhead by hearing about Him, by glorifying Him, by remembering Him and by worshiping Him always, without cessation. That is the perfect way of devotional service. The Gosvāmīs of Vṛndāvana, who were authorized by Śrī Caitanya Mahāprabhu to preach the bhakti cult, rigidly followed this rule and made immense literatures of transcendental science for our benefit. They have chalked out ways for all classes of men in terms of the different castes and orders of life in pursuance of the teachings of Śrīmad-Bhāgavatam and similar other authoritative scriptures.