Vedic Thoughts
Real happiness must be appreciated by one's transcendental senses. Unless one is purified, the transcendental senses are not manifest; therefore to purify the senses one must take to Krsna consciousness and engage the senses in the service of the Lord. Then there will be real happiness and liberation.
His Divine Grace A. C. Bhaktivedanta Swami Prabhupada
Srimad-Bhagavatam 4.28.20, Purport
Absolute knowledge is in the mode of goodness, knowledge based on duality is in the mode of passion, and foolish, materialistic knowledge is in the mode of ignorance. Knowledge based upon Me, however, is understood to be transcendental.
Lord Sri Krsna
Srimad-Bhagavatam 11.25.24
The sound incarnation of Lord Krsna, the Supreme Soul [i.e., Srimad-Bhagavatam], enters into the heart of a self-realized devotee, sits on the lotus flower of his loving relationship, and thus cleanses the dust of material association, such as lust, anger, and hankering. Thus it acts like autumnal rains upon pools of muddy water.
Maharaja Pariksit
Srimad-Bhagavatam 2.8.5
My dear king, when Krsna’s devotees dance in kirtana, they destroy the inauspiciousness of the earth by the touch of their feet, of the directions by their glance, and of the higher planetary systems by their upraised arms.
Hari-bhakti-sudhodaya 20.68
You should know, O best of brahmanas, that in each cycle of four ages the branches of the Vedas are thus organized by a different Vyasa. But Krsna -dvaipayana Vyasa, know it well, is the Supreme Lord Narayana Himself. Who else on earth, O Maitreya, could be the author of the Mahabharata?
Parasara Muni
Skanda Purana 3.4.4–5
O Visnu, Your name is completely transcendental. Thus it is self-manifest. Indeed, even without properly understanding the glories of chanting Your holy name, if we vibrate Your name with at least a small understanding of its glories–that is, if we simply repeat the syllables of Your holy name–gradually we shall understand it.
Rg Veda 1.156.3
Compared to a person who is attached to chanting japa, the person who performs loud chanting of the holy name of Sri Hari is one hundred times better. This is because the person who chants japa purifies himself, whereas the person who chants the holy name loudly in kirtana purifies himself, all those who are with him, and everyone else who hears the holy vibration.
Sri Naradiya
Quoted in Caitanya-bhagavata, Adi-khanda 16.283