As soon as there is the chanting vibration, Hare Krishna, immediately Krishna’s paraphernalia, Krishna’s name, Krishna’s fame, Krishna’s abode, Krishna’s associates  – everything – all of a sudden become manifested within because He is present. This is the beginning of one’s Krishna consciousness. To remember by reference to a context means that as soon as one hears a code word, one at once remembers all the information behind that code. Similarly, when our minds are attracted to Krishna and everything about Krishna simply by hearing a little glorification of His qualities, that is the beginning of pure Krishna consciousness.
His Divine Grace A. C. Bhaktivedanta Swami Prabhupada
The Science of Self-Realization, Chapter 8, “The Highest Love”

As soon as we learn about the truth, we should become fixed in it. We should not waste even a moment of the time we have left in our lives on sense gratification. Rather, we should use all our time to worship Hari.
Srila Bhaktisiddhanta Sarasvati Thakura
Amrita-vani, “108 Essential Instructions”

The practice nowadays is to read a novel reclining on the bed after supper and before sleep. However, Sri Chaitanya’s teaching must not be treated or read in the same manner. The essence and profound conclusions of the entire Vedic scriptures lie encapsulated in His precepts. The transcendental truths contained in His teachings may only be grasped if and when they are read with proper faith, attentively and in the company of saintly personages, followed by discussions to mine out the gems of truth.
Srila Bhaktivinoda Thakura
Dasha-mula-tattva, Chapter 1

Who, other than one who is not a human being, can exist in this world and not be interested in the ultimate goal of life? Who can refuse the nectar of narrations about the Personality of Godhead’s activities, which by itself can deliver one from all material pangs?
Sri Maitreya
Srimad-Bhagavatam 3.13.50

Krsna is very grateful for the smallest drop of service, considering it an ocean. He strictly keeps a vow to always protect those devoted to Him.
Srila Jiva Goswami
Sankalpa Kalpavriksha, Chapter 1

I am completely under the control of My devotees. Indeed, I am not at all independent. Because My devotees are completely devoid of material desires, I sit only within the cores of their hearts. What to speak of My devotee, even those who are devotees of My devotee are very dear to Me.
Lord Vishnu
Srimad-Bhagavatam 9.4.63