The atman is not reached by the man devoid of strength, or by the careless one, or by vain practice of austerity. But if one who knows strives by these means, his self enters the abode of Brahman. – Chandogya Upanisad VII, 26. 2

The sage knows Brahman, the support of all, the pure effulgent being in whom is contained the universe. They who worship the sage, and do so without thought of self, cross the boundary of birth and death. Mundaka Upanishad

Higher and other than the world tree, time and forms is He from whom this expanse proceeds-the bringer of dharma, the remover of evil, the lord of prosperity. Know Him as in one's own Self, as the immortal abode of all.-Krishna Yajur Veda, Svetasvatara Upanishad 3.1

In That all this unites; from That all issues forth. He, omnipresent,

is the warp and woof of all created things.-Shukla Yajur Veda

Machines never made mankind happy, and never will make. The man alone who is the lord of his mind can become happy, and none else.- Swami Vivekananda

I go for refuge to God who is One in the silence of eternity, pure radiance of beauty and perfection, in whom we find our peace. He is the bridge supreme which leads to immortality, and the spirit of fire which burns the dross of lower life. – Krishna Yajur Veda, Svetasvatara Upanishad 6.9

The thirty-six elements dance. Sadasiva dances. Consciousness dances. Siva-Sakti dances. The animate and inanimate dance. All these and the Vedas dance when the Supreme dances His dance of bliss. The seven worlds as His golden abode, the central kundalini sakti as His divine stage, thus in rapture He dances.-Tirumantiram 2789, 2749

He approached and entered the temple where the Lord who has the golden mountain for His bow dwells in delight. He circumambulated it, prostrated himself at the sacred courtyard, entered the presence of the three-eyed God, the bull-rider crowned with matted, red hair. Periyapuranam 5.21

When a man knows God, he is free: his sorrows have an end, and birth and death are no more. When in inner union he is beyond the world of the body, then the third world, the world of the Spirit, is found, where the power of the All is, and man has all-for he is one with the One. Krishna Yajur Veda, Svetasvatara Upanishad 1.11

They say it is to know union with love that the soul takes union with the body.-Tirukural Verse 73

Seers can reach Him because He is visible; worshipers, too, can see Him. But if they possess love for Him, Hara, who is the first cause of the ancient universe, will manifest Himself to their mind as light. – Tirumurai, Arputat Tiruvantati 17