At the present moment the human society teaches one to love his country or family or his personal self, but there is no information where to repose the loving propensity so that everyone can become happy. That missing point is Krsna, and The Nectar of Devotion teaches us how to stimulate our original love for Krsna and how to be situated in that position where we can enjoy our blissful life.

His Divine Grace A.C. Bhaktivedanta Swami Prabhupada
Preface to The Nectar of Devotion

This temporary life is full of miseries. Take shelter of the holy name as your only business.

Srila Bhaktivinoda Thakura
Arunodaya-kirtana, from Gitavali

Philosophical research culminates in understanding the Supreme Personality of Godhead. After achieving this understanding, when one becomes free from the material modes of nature he attains the stage of devotional service. Either by devotional service directly or by philosophical research, one has to find the same destination, which is the Supreme Personality of Godhead.

Lord Kapiladeva
Srimad-Bhagavatam 3.32.32

One should try to keep himself satisfied in any condition of life whether distress or happiness which is offered by the supreme will. A person who endures in this way is able to cross over the darkness of nescience very easily.

Sri Narada Muni
Srimad-Bhagavatam 4.8.33

Unto one who has transcendental qualities due to friendly behavior with the Supreme Personality of Godhead, all living entities offer honor, just as water automatically flows down by nature.

Sri Maitreya Rsi
Srimad-Bhagavatam 4.9.47

Give up all fear and shyness and take shelter of the merciful Lord Sri Caitanya Mahaprabhu. He rescues the most wicked of heart, and therefore He is known as Patita Pavana, "the savior of the fallen."

Srila Narottama Dasa Thakura

The transcendental body of Krsna is very sweet, and His face is even sweeter than His body. The soft smile on His face, which is like the fragrance of honey, is sweeter still.

Sri Bilvamangala Thakura