Kṛṣṇa consciousness is the easiest process of executing yoga principles.
(Bhagavad-Gita---5:27-28---purport).

Even if those who are not devotees always think of Viṣṇu, they become free from all sinful activities. Kṛṣṇa consciousness is the highest form of thought. Lord Viṣṇu is thought of in this age by chanting Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare.
(Srimad Bhagavatam---3:16:31---purport).

Kṛṣṇa consciousness is a very simple process. One need only chant the holy names of the Lord and strictly follow the principles forbidding sinful activity.
(Sri Caitanya Caritamrta---2:8:36---purport).

Actually, Kṛṣṇa consciousness is not a sectarian religious faith; it is a teaching process for understanding the Supreme Lord and our relationship with Him. Anyone can join this movement without prejudice, but unfortunately there are persons who feel differently. It is better, therefore, not to instruct the science of Kṛṣṇa consciousness to such persons.
(Srimad Bhagavatam---3:32:40---purport).

Vedic rituals, like prescribed sacrifices, are performed for purification of impious activities that were performed in the field of sense gratification. But action in Kṛṣṇa consciousness is transcendental to the reactions of good or evil work.
(Bhagavad-Gita---3:19---purport).

Kṛṣṇa consciousness is transcendental to all these three modes of material nature, and those who are truly established in Kṛṣṇa consciousness are actually liberated.
(Bhagavad-Gita---7:13---purport).

By concentrating one's attention on the transcendental form of Kṛṣṇa, who is all-pervading and beyond time and space, one becomes absorbed in thinking of Kṛṣṇa and then attains the happy state of transcendental association with Him.
Kṛṣṇa consciousness is the highest stage of trance in yoga practice.
(Bhagavad-Gita---6:31---purport).

When love of God deteriorates into lust, it is very difficult to return to the normal condition. Nonetheless, Kṛṣṇa consciousness is so powerful that even a late beginner can become a lover of God by following the regulative principles of devotional service.
(Bhagavad-Gita---3:41---purport).