Answer
The faith that develops in relation to Srila Prabhupada is not blind faith; it is reasonable faith.
Faith develops when you begin to feel the presence of Srila Prabhupada through his books. You may not initially understand all the philosophy—for example, why the four regulative principles are beneficial, how they affect the individual and society, or the deeper psychology behind them. It may take a long time to fully understand all those details.
Yet you follow because you have faith in Prabhupada as a living spiritual guide, not merely as a historical author. When you read his books and feel that he is speaking directly to you, faith becomes strong.
Just as two people can feel each other's presence over a telephone even without seeing each other, you can feel someone's presence through their mind expressed in words. Sound that reveals a person's consciousness conveys presence. Similarly, Prabhupada's books reveal his mind, and through that you can experience his association.
Faith begins with intellectual conviction. For example, when Prabhupada defines God as Bhagavan, possessing all six opulences in full, the definition is rational, comprehensive, and philosophically satisfying. You first think, “This makes sense.” That is not blind faith; it is reason leading to conviction.
The process is similar to studying a chemistry textbook. You do not personally verify every chemical formula, but you verify enough through practical experiments to develop confidence in the textbook. Likewise, in Krishna consciousness, you apply the teachings, experience results, and your faith becomes stronger.
True faith contains both intellectual conviction and a feeling of truth. It is not merely an emotion, nor is it merely an idea. It is a conviction that gradually becomes experiential.
When you chant Hare Krishna with faith, you begin not only to understand that the holy name is nondifferent from Krishna, but also to feel His presence. That is the maturation of faith.