This sentence is a classic Buddhist Zen saying, which is about the epiphany of Buddhism. It comes from the second chapter of the Prajna Sutra of the Six Ancestors Tanjing.
Prajna, also known as Prajna, Prajna, Prajna, Prajna, etc. , is a Sanskrit transliteration, commonly pronounced "Poye". In Buddhist classics, it means "ultimate wisdom" and "identifying wisdom", which contains a wide range of things.
Stupidity and wisdom are symbols used to represent Buddhist thought. People here often take wisdom as the meaning of epiphany, understanding and comprehension of Buddhism, while stupidity is the opposite meaning of guessing wrong and being confused.
Extended data
There are six kinds of prajnaparamita wisdom, namely, the so-called six prajnaparamita, the first is prajnaparamita in reality, the second is prajnaparamita in realm, the third is prajnaparamita in writing, the fourth is prajnaparamita in convenience, the fifth is prajnaparamita in family and the sixth is prajnaparamita in contemplation. The connotation of six kinds is Vajrayana Prajna.
The central idea of the Six Ancestors' Tanjing is the Buddhist theory of "regarding nature as Buddha" or "mind as Buddha" and the practice view of "seeing nature with an epiphany". The so-called "only the law of seeing nature is born of evil teaching." Sex refers to the possibility of all beings becoming buddhas. That is, "Bodhi is self-nature, which is pure, but with this heart, it will become a Buddha." "Although people have north and south, Buddhism has no north and south."
Baidu Encyclopedia-Prajna
Baidu Encyclopedia-Six Ancestors Tanjing