"This material world is often described as an ocean of nescience. In such an ocean, everything is agitated. The mind of a great devotee is also like an ocean or a very large lake, but there is no agitation. As stated in Bhagavad-gita (2.41): vyavasayatmika buddhir ekeha kuru-nandana. Those who are fixed in the service of the Lord are not agitated by anything. It is also stated in Bhagavad-gita (6.22): yasmin sthito na duhkhena gurunapi vicalyate. Even if he suffers some reversals in life, a devotee is never agitated. Therefore whoever takes shelter of a great soul or a great devotee becomes pacified. In the Caitanya-caritamrita (Madhya 19.149) it is stated: krishna-bhakta -- nishkama, ataeva 'santa.' A devotee of Lord Krishna is always peaceful because he has no desire, whereas the yogis, karmis and jnanis have so many desires to fulfill. One may argue that the devotees have desires, for they wish to go home, back to Godhead, but such a desire does not agitate the mind. Although he wishes to go back to Godhead, a devotee is satisfied in any condition of life. Consequently, the word mahan-manah is used in this verse to indicate that the reservoir of water was as calm and quiet as the mind of a great devotee."
(Srimad-Bhagavatam, 4.24.20, Purport)
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