Tamala Krsna: Srila Prabhupada? What is that ingredient or what is that thing which causes faith to develop in one? From someone becoming...
Prabhupada: Purity. Purity. The more you become pure, the faith is firm.
Narayana: So faith comes from previous pious activities?
Prabhupada: No, may not be previous activity. You believe the authority, spiritual master.
Tamala Krsna: That comes from purity, faith.
Tamala Krsna: As purity develops, one becomes more faithful.
Prabhupada: Yes. That purity is said, adau sraddha: "Beginning is faith." Now tato sadhu-sangah: "You mix with faithful men." Then it will develop. Otherwise, if you take simply initiation and then sleep, then faith will be lost. That is happening. Therefore it is said, adau sraddha tato sadhu-sangah. You accept faith, maybe blindly. Now you make further progress by mixing with advanced devotees. Then it will remain fixed. Otherwise you will loss.
Bahulasva: Faith is fixed by knowledge?
Prabhupada: No, faith may be blind, but it increases. If you stick to faith and follow the principles, then it will increase. Svayam eva sphuraty adah. Just like... Yasya deve para bhaktih yatha deve tatha gurau. So if you have got faith in spiritual master then you will advance. If you have no faith, then it will be lost.
Tamala Krsna: And unless one is pure, he will not have faith.
Morning Walk -- July 21, 1975, San Francisco