Without becoming a devotee of the Lord, one cannot perfect one's human life. The perfection of human life is to be elevated to the spiritual world, where there is no birth, no death, no disease, and no old age … Without this aim, any amount of material advancement in so-called comforts can only bring the defeat of the human form of life.
His Divine Grace A.C. Bhaktivedanta Swami Prabhupada
Srimad-Bhagavatam 3.3.28, Purport
Everything that can be achieved by fruitive activities, penance, knowledge, detachment, mystic yoga, charity, religious duties, and all other means of perfecting life is easily achieved by My devotee through loving service unto Me. If somehow or other My devotee desires promotion to heaven, liberation, or residence in My abode, he easily achieves such benedictions.
Lord Sri Krsna
Srimad-Bhagavatam 11.20.32-33
If something happens by providential arrangement, we should not be very sorry. The more we try to rectify such reversals, the more we enter into the darkest region of materialistic thought.
Lord Brahma
Srimad-Bhagavatam 4.19.34
My dear Lord [Visnu], I do not wish to have the benediction of merging into Your existence, a benediction in which there is no existence of the nectarean beverage of Your lotus feet. I want the benediction of at least one million ears, for thus I may be able to hear about the glories of Your lotus feet from the mouths of Your pure devotees.
Maharaja Prthu
Srimad-Bhagavatam 4.20.24
A person who is constantly engaged in reading literature enunciating the cultivation of Vaisnava devotional service is always glorious in human society, and certainly Lord Krsna becomes pleased with him. A person who very carefully keeps such literature at home and offers respectful obeisances to it becomes freed from all sinful reactions and ultimately becomes worshipable by the demigods.
Skanda Purana
One who always sees all living entities as spiritual sparks, in quality one with the Lord, becomes a true knower of things. What, then, can be illusion or anxiety for him?
Sri Isopanisad, Mantra Seven