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Under the Direction of God (Krishna)
His Divine Grace Srila Prabhupada speaks as Krsna speaks
“It is not possible for a common man to write books on bhakti, for his writings will not be effective. He may be a very great scholar and expert in presenting literature in flowery language, but this is not at all helpful in understanding transcendental literature. Even if transcendental literature is written in faulty language, it is acceptable if it is written by a devotee, whereas so-called transcendental literature written by a mundane scholar, even if it is a very highly polished literary presentation, cannot be accepted. The secret in a devotee’s writing is that when he writes about the pastimes of the lord, the lord helps him; he does not write himself.
We Don’t Allow Any Literature Not Given by Liberated Soul
compiled by Sriman Mahesh Prabhu
The difference between Srila Prabhupada’s books and other so-called gurus’ (conditioned souls) writing is Srila Prabhupada’s instruction was coming directly from Krsna. This is the transcendental platform.
Srila Prabhupada encouraged his disciples, however, to write their realizations. Other conditioned souls may present their nonsense commentaries on Bhagavad-Gita etc., but they will never be quoted for references. Srila Prabhupada is on the trancendental platform and Krishna speaks through him, consequently only he will be quoted for reference.
The Hare Krishna Movement 