In plain words
Heaven is not in some other world; it is right here in the world of men. To have good qualities and to walk aright: that becomes heaven, here on the earth.
The Vedas and the Upaniṣads are the root of the culture of Bhārata. The Vedas are the root cause of music and of literature. Music arose from the Sāma Veda itself. Literature took its rise from the Ṛg Veda. Music filled with Bhakti is the very form of God, and so
"I dwell not in Vaikuṇṭha, nor in the yogī's heart; where My devotees sing, there I stay, Nārada,"
said Nārāyaṇa. I do not dwell in Vaikuṇṭha nor in the heart of any yogī. Madbhaktaḥ yatra gāyanti. "Wherever My devotees remember Me, there I am installed," He said. God dwells not just in devotees' hearts but in the hearts of the wicked too. The Veda has shown that the true man is he who crosses over himself and longs to carry others across. God, the Indweller of all, abides in the heart of everyone, gladdens all mankind and makes divinity shine forth.
Prahlāda once came to his mother Līlāvatī and said, "Mother, between me, who am dear to Hari, and my father, who hates Hari, there is only one difference. I love God and remember Him, I drink the nectar of His Prema, I fill my heart with it; drunk, drunk with Prema, lost in Him, at one with Him, I am experiencing Ānanda," he said. My father Hiraṇyakaśipu hates Nārāyaṇa; he has turned his heart into hard stone and installed Nārāyaṇa in that very stone. In the heart of Hiraṇyakaśipu, who hated Hari, and in the heart of Prahlāda, who loved Hari, there dwells one and the same Hari. Prahlāda drank Prema in its liquid form, quenched his thirst and cooled the heat in himself.