Yoga necessitates controlling the senses, and bhakti-yoga, or Krsna consciousness, is the process of purifying the senses. When the senses are purified, they are automatically controlled. One cannot stop the activities of the senses by artificial means, but if one purifies the senses by engaging in the service of the Lord, the senses not only can be controlled from rubbish engagement, but can be engaged in the Lord's transcendental service.
His Divine Grace A. C. Bhaktivedanta Swami Prabhupada
Srimad-Bhagavatam 3.15.45, Purport
It is a great wonder that Krsna, being impartial, is fully partial to His devotees.
Srila Bhaktisiddhanta Sarasvati Thakura
Brahma-samhita 5.54, Purport
As soon as one becomes inimical to Krsna and desires sense gratification, he is struck down by the illusory energy of the Lord.
Srila Jagadananda Pandita
Krsna is the Supreme Godhead. One should meditate on Him, relish the taste of reciprocating loving exchanges with Him, worship Him, and offer sacrifices to Him.
Gopala-tapani Upanisad, Purva 50
It is the living entity's constitutional position to be an eternal servant of Krsna because he is the marginal energy of Krsna and a manifestation simultaneously one with and different from the Lord.
Sri Caitanya Mahaprabhu
Sri Caitanya-caritamrta, Madhya-lila 20.108
My dear Uddhava, the unalloyed devotional service rendered to Me by My devotees brings Me under their control. I cannot be thus controlled by those engaged in mystic yoga, Sankhya philosophy, pious work, Vedic study, austerity, or renunciation.
Lord Sri Krsna
Even if one distributes ten million cows in charity during an eclipse of the sun, lives at the consuence of the Ganges and Yamuna for millions of years, or gives a mountain of gold in sacrifice to the brahmanas, he does not earn one hundredth part of the merit derived from chanting Hare Krsna.
Quoted in Sri Caitanya-caritamrta, Adi-lila 3.79, Purport
The lotus feet of Lord Visnu are the supreme objective of all the demigods. Those lotus feet are as enlightening as the sun in the sky.
Rg Veda 1.22.20