In the book of science of self realization ,Srila Prabhupada was asked one similar question
Mr. Faill: Is it a question of just understanding it intellectually?
Srīla Prabhupada: in the beginning, yes. There are two departments of knowledge: theoretical and practical. First one must learn spiritual science theoretically; then, by working on that spiritual platform, one comes to the point of practical realization.
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