In plain words
In every human being too, Prema keeps flowing, more or less. The jīva emerges as a part of the Paramātma, who is the embodiment of supreme Prema. Man too is the very embodiment of Prema. But because this man turns it onto the worldly path and lets it flow there, it is becoming tainted. In the essence of supreme Prema mixed with this taint, the beautiful lotus face of God cannot be seen so clearly. We think that Bhakti means merely worshipping, meditating and doing japa. To search, through the inner Ātma, for the experience of indescribable Ānanda is Bhakti. It may also be said that this is the spiritual delight of the jīva united with the Paramātma. A prayer made in anguish from the cave of the heart rises from the citta, takes shape as one unbroken stream and turns into Prema: this is one Bhakti. Another name for it too is this: Bhakti is the transformation of Prema in the mind. To win Prema through Prema is the chief Bhakti. This Prema must not be a tie to outward, worldly things; it must belong to the supreme Prema that is the highest principle, that is undivided, that is within reach. Prayer does not mean merely begging. It means telling the Paramātma one's anguish, one's suffering, one's longing. It means offering up to the Paramātma one's goal, one's blessedness, one's merit. So Bhakti must be blended not only into worldly activities but into the change of the heart and the bent of the heart.
The divine principle that seeks oneness with God is Bhakti. It is of two kinds. To recognise through learning the Vijñāna of Īśvara's divinity, and through that to cross over oneself. Beginning naturally from birth, it brings the many kinds of mental disposition into oneness; one crosses over oneself and carries others across: this Prema for Īśvara is natural Bhakti. Only the person who has recognised the power of Īśvara's divinity through learning and through Vijñāna can cross over himself. Devotional dispositions formed together with society, having the strength and capacity not only to cross over oneself but to carry one's fellow men across too: this is the second Bhakti. Sā-tarati sālokaṃ tārayati. That is, to cross over oneself and to carry others across. In humanity the stream of infinite Prema keeps flowing, unbroken.