5.
The Discourse on the Diamond Simile
25. "Monks, there are these three persons existing and found in the world. Which three? The person with a mind like a sore, the person with a mind like lightning, the person with a mind like a diamond. And what, monks, is the person with a mind like a sore? Here, monks, a certain person is prone to wrath, abundantly given to anguish; even when spoken to a little, he becomes attached, becomes angry, is repelled, becomes obstinate, and manifests irritation, hate, and displeasure. Just as, monks, a festering sore, when struck by a stick or a potsherd, discharges even more exceedingly; just so, monks, here a certain person is prone to wrath, abundantly given to anguish; even when spoken to a little, he becomes attached, becomes angry, is repelled, becomes obstinate, and manifests irritation, hate, and displeasure. This is called, monks, the person with a mind like a sore.
"And what, monks, is the person with a mind like lightning? Here, monks, a certain person understands as it really is: 'This is suffering'; he understands as it really is: 'This is the origin of suffering'; he understands as it really is: 'This is the cessation of suffering'; he understands as it really is: 'This is the practice leading to the cessation of suffering'. Just as, monks, a man with eyes in the darkness of the night might see forms by a flash of lightning; just so, monks, here a certain person understands as it really is: 'This is suffering', etc. he understands as it really is: 'This is the practice leading to the cessation of suffering.' This is called, monks, the person with a mind like lightning.
"And what, monks, is the person with a mind like a diamond? Here, monks, a certain person, with the elimination of the mental corruptions, in this very life, having realised by direct knowledge himself, having attained, dwells in the liberation of mind and liberation by wisdom that are without mental corruptions. Just as, monks, there is nothing that a diamond cannot pierce, whether gem or stone; just so, monks, here a certain person, with the elimination of the mental corruptions, etc. enters and dwells. This is called, monks, the person with a mind like a diamond. These, monks, are the three persons existing and found in the world." The fifth.