Do not rely merely on the person, but on the words;
Do not rely merely on the words, but on their meaning;
Do not rely merely on the provisional meaning, but on the definitive meaning; and
Do not rely merely on intellectual understanding, but on direct experience.
— The Four Reliances
There is a verse in which Buddha urges his followers to take his words as they might accept from a jeweler a metal that appears to be gold: only after seeing that the metal does not tarnish when burned, can be easily cut, and can be polished to a bright shine should the metal be accepted as gold. This, the Buddha gives us his permission to critically examine even his own teachings. Buddha suggests we make a thorough inquiry into the truth of his words and verify them for ourselves, and only then “accept them, but not out of reverence.”
Taking direction from statements such as these, ancient Indian monastic universities, such as Nalanda, developed a tradition whereby students would critically subject their own teachers’ scholastic work to analysis. Such critical analysis was seen in no way to go against the great admiration and reverence the students had for their teachers. The famous Indian master Vasubandhu, for example, had a disciple known as Vimuktisena, who was said to excel Vasubandhu in his understanding of the Perfection of Wisdom sutras. He questioned Vasubandhu’s Mind-only interpretation and instead developed his own understanding of the sutras in accord with the Middle Way School.
An example of this in the Tibetan Buddhist tradition is Alak Damchoe Tsang, who was one of the disciples of the great nineteenth century Nyingma master Ju Mipham. Although Alak Damchoe Tsang had tremendous admiration and reverence for his teacher, he voiced his objections to some of Mipham’s writings. Once a student of Alak Damchoe Tsang is said to have asked if it is appropriate to critically object to the writings of his own teacher. Alak Damchoe Tsang’s immediate response was, “If one’s great teacher says things that are not correct, one must take even one’s lama to task!”
Retain your reverence and admiration for the person,
but subject the writing (teaching) to thorough critical analysis.
— Tibetan Saying
Essence Of The Heart Sutra: The Dalai Lama’s Heart Of Wisdom Teachings
By HHDL, Translated & Edited By Geshe Thupten Jinpa