The Bodhisattva of Wisdom (prajna. ) One of the principal Bodhisattvas of the Zen Buddhist tradition. Personifies wisdom and is often represented riding a lion and holding the sword of wisdom, which can cut through delusion. Also known as Monju in Japanese. One of the two key Mahayana concepts; the other is compassion (represented by Avalokiteshvara). His two main symbols are the sword of knowledge and a book of the Prajna-Paramita Sutra. His wisdom casts away the darkness of ignorance.