If one regularly sees the Supreme Personality of Godhead in the temple, one will gradually be disinfected of all material desires simply by visiting the temple and seeing the deity. When one is freed from all the results of sinful activities, one will be purified, and with a healthy mind, completely cleansed, he will increasingly make progress in Krishna consciousness.
His Divine Grace A. C. Bhaktivedanta Swami Prabhupada
Srimad-Bhagavatam 6.16.31, Purport
O unconquerable Lord, although You cannot be conquered by anyone, You are certainly conquered by devotees who have control of the mind and senses. They can keep You under their control because You are causelessly merciful to devotees who desire no material profit from You. Indeed, You give Yourself to them, and because of this You also have full control over Your devotees.
I shall accept the role of a devotee, and I shall teach devotional service by practicing it Myself [as Chaitanya Mahaprabhu].
Lord Sri Krishna
Sri Chaitanya-charitamrita, Adi-lila 3.20
Pure devotional service in Krishna consciousness is the highest enlightenment, and when such enlightenment is there, it is just like a blazing forest fire, killing all the inauspicious snakes of desire.
Quoted in The Nectar of Devotion, Chapter 1
The eternally blissful form of knowledge, Sri Krishna Chaitanya, is the eternal worshipable Lord of the living entities, and to carry out His order with body, mind, and speech is real Vaishnava fame; this is pure transcendental spiritual identification.
Srila Bhaktisiddhanta Sarasvati Thakura
Sri Chaitanya-bhagavata, Adi-khanda 9.213, Commentary
The Supreme Lord . . . possesses a form that is transcendental, spiritual, eternal, full of knowledge and bliss, and beyond material perception. This form can be approached only by His devotees. . . . For material eyes the Supreme Lord is formless, and for spiritual eyes He has a form.
Srila Bhaktivinoda Thakura
O mind, just worship the lotus feet of Krishna, the son of Nanda, which make one fearless. Having obtained this rare human life, cross over this ocean of worldly existence through the association of saintly persons.
Srila Govinda Dasa Kaviraja
Bhajahu Re Mana Sri Nanda-nandana 1
One attains the human form of life after transmigrating through 8,400,000 species by the process of gradual evolution. Human life is spoiled for those conceited fools who do not take shelter of the lotus feet of Govinda [Krishna].
Brahma Vaivarta Purana