I (the soul) am part of Hari, the source of all that exists. Beyond Him, there is no other cause or effect. For one who realizes this truth, there is no longer birth or rebirth, nor the dualities of sorrow and joy.
- Viṣṇu-purāṇa, 1.22.86

I bow to the supreme Śrī Hari, whose name-singing destroys all sins, and whose reverent prostration removes all suffering. 
- Bhāgavata-purāṇa, 12.13.23

He is Hari, the supreme person, the heroic one, Kṛṣṇa, the victorious, and the lord of all beings.
- Harivaṃśa, 3.111.1

The truth is one, but the wise call it by many names. 
- Ṛg Veda, 1.164.46

To those who are constantly engaged with Me, and who worship Me with intense Love, I give them the Realisation by which they can come to Me.
- Bhagavad-gītā, 10.10

Thus devoted, chanting the beloved Lord’s Name, a devotee’s heart melts in deep love, and he cries out aloud. He laughs, weeps, shouts, and sings; Like one mad with love, he dances, oblivious to the world.
- Bhāgavata-purāṇa, 11.2.40

In this material world, to render service to the lotus feet of Govinda, the cause of all causes, and to see Him everywhere, is the only goal of life. This much alone is the ultimate goal of human life, as explained by all the revealed scriptures.
- Bhāgavata-purāṇa, 7.7.55

Only by single-minded devotion, Arjuna, is it possible to truly know, see and indeed enter into My Abode. Whoever serves Me, regards Me as the highest, whoever is devoted to Me, is free from attachment, and shows no malice towards any living being, comes to Me, O Arjuna.
- Bhagavad-gītā, 18.54-55

Remembering and reminding one another of Śrī Hari, the remover of all sins, they cultivate devotion, which arises through devotion itself, and bear bodies thrilled with ecstasy.
- Bhāgavata-purāṇa, 11.3.31

Pure devotees or great saintly persons who desire to achieve the highest goal in life and who are completely free from all material desires for sense gratification engage constantly in the transcendental service of Your lotus feet.
- Bhāgavata-purāṇa, 8.12.6

One should approach a spiritual master with submission, extensive inquiry and service. Such realized souls can instruct you, for they have seen the Truth.
- Bhagavad-gītā, 4.34

One who has accepted an ācārya (guru) can know the Supreme Lord.
- Chāndogya Upaniṣad, 6.14.2

To that great soul who has great devotion to the Lord and equal devotion to the guru, the meanings of the matters spoken in scripture are revealed.
- Śvetāśvatara Upaniṣad, 6.23

In My opinion, whoever studies this dialogue of ours (Bhagavad-gītā)based on dharma, worships Me through the sacrifice of knowledge. And the one who listens to it with faith, free from envy, shall also be liberated and will attain the auspicious realms where those who have performed righteous deeds reside.
- Bhagavad-gītā, 18.70-71

The teachings of the Lord, and the chanting by His disciples, and the various secret teachings of the Supreme Being, as revealed by Him, are indeed the highest.
- Kūrma-purāṇa, 2.44.113