Prabhupāda: We are making this preaching work of Kṛṣṇa consciousness. If somebody comes he's Kṛṣṇa's, he's not mine. These boys serving me, not for my sense gratification, for developing Kṛṣṇa consciousness. Similarly, if he goes to serve a master, he serves the master for the sense gratification of the particular person. Therefore he pays him. So he does not serve that master. He serves that payment. And what is that payment? For his sense gratification. Therefore he serves his sense gratification. The karma is serving one's sense gratification. And bhakti is serving Kṛṣṇa's sense gratification. Kṛṣṇa will be satisfied in this way. We work in that way.