O son of Bharata, as the sun alone illuminates all this universe, so does the living entity, one within the body, illuminate the entire body by consciousness.- Lord Sri Krishna Bhagavad-gita 13.34
Vaidha bhaktas [practicing devotees] should always try to bring their hearts to the lotus feet of Krishna while spending their lives situated in varnanrama-dharma. This is bhakti-yoga. The main purpose of varnanrama-dharma is to obey the laws of health, to cultivate and improve the faculty of the mind, to cultivate the social good, and to learn spiritual truth in order to cultivate devotion.- Srila Bhaktivinoda Thakura Sri Caitanya-niksamrta, Part 1
O best of the brahmanas, without saintly persons for whom I am the only destination, I do not desire to enjoy My transcendental bliss and My supreme opulences.- Lord Narayana Srimad-Bhagavatam 9.4.64
Renunciation is the basic principle sustaining the lives of Sri Caitanya Mahaprabhu’s devotees. Seeing this renunciation, Sri Caitanya Mahaprabhu, the Supreme Personality of Godhead, is extremely satisfied. –Srila Krishnadasa Kaviraja Gosvami Sri Caitanya-caritamrta, Antya-lila 6.220
In this age I will distribute devotional service that is desired by the demigods, sages, and perfected beings to everyone, including the untouchables, miscreants, Yavanas, dogeaters, women, nudras, and other fallen souls belonging to the lower castes. But people who are intoxicated by education, wealth, high birth, knowledge, and austerity, and who as a result commit offenses at the feet of My devotees, will be cheated in this age, for they will not accept My glories.- Sri Caitanya Mahaprabhu Sri Caitanya-bhagavata, Antya-khanna, 4.122–125
The essence of sadhana bhakti is to carefully consider and follow the path displayed by the previous and the present mahajanas (great personalities). One should not neglect the practice of remembering the pastimes of the Lord, for devotional service should be performed with the mind as well as the body.- Srila Narottama Dasa Thakura Sri Prema-bhakti-candrika 2.2