The king asked, “What is the characteristic mark of wisdom?” Nāgasena said, “If a person has wisdom, he can cut off all the doubts, and can distinguish what is meritorious. This is wisdom.
“It is like a person entering a dark room with light in hand. As soon as the light enters the room, the darkness disappears. So a person endowed with wisdom is like a bright light. The person who is endowed with wisdom can cut off all evils, just like a person who cuts down the trees with a sharp knife. For worldlings, wisdom is of prime importance. A person endowed with wisdom is able to transcend the suffering of saṃsāra.”
“Excellent, Nāgasena.” — Nāgasena Bhikṣu Sūtra