"So actually devotee is the richest, because they don't care even for yoga-siddhi or heavenly planet or merging into the Brahman effulgence or become very rich and a brāhmaṇa, or... No. They don't want. Caitanya Mahāprabhu says, 'No.'
na dhanaṁ na janaṁ na sundarīṁ
kavitāṁ vā jagadīśa kāmaye
mama janmani janmanīśvare
bhavatād bhaktir ahaitukī tvayi
This is devotee. This is pure devotion. They don't want anything. Therefore they are śānta (peaceful). If you want śānta, then you stop demanding, 'I want this, I want this, I want this, I want this.' So long you'll want, you are in need, how there can be santa? There is no possibility. Bhukti-mukti-siddhi-kāmī sakali aśānta. Everyone... Bhukti means karmī, and mukti means jñānī and siddhi means yogī. They are wanting something.
So they cannot be śānta. Kṛṣṇa-bhakta niṣkāma ataeva śāntaḥ (CC Madhya 19.149). Kṛṣṇa-bhakta doesn't want anything. Kṛṣṇa... Kṛṣṇa-bhakta even does not want Kṛṣṇa even. He wants only Kṛṣṇa's service. That's all. 'Why I shall bother Kṛṣṇa? Kṛṣṇa is busy in His own business. Let Him dance with the gopīs. I shall simply serve Him. That's all. Why shall I want Kṛṣṇa? Why shall I disturb Him?' This is devotion."
(Srila Prabhupada Lecture, Bombay, January 6, 1973)