Prabhupāda: Nobody can become friend except Kṛṣṇa.
Devotee: But a pure devotee is a friend to all.
Prabhupāda: Because he carries the message of Kṛṣṇa. Kṛṣṇa is friend, and he is carrying the friendly message. Therefore He is friend. If there is a nice friend and if somebody gives information of that nice friend, he is also friend.
(Srila Prabhupada Morning Walk, San Francisco, July 18, 1975)