5.
The Discourse on the Wise
226.
"'Wise, not an idiot, wise, not an idiot', venerable sir, is said.
In what way, venerable sir, is one called 'wise, not an idiot'?"
"Because of having developed and cultivated the seven factors of enlightenment, monk, one is called 'wise, not an idiot'.
Which seven?
The enlightenment factor of mindfulness, etc.
the enlightenment factor of equanimity -
Because of having developed and cultivated these seven factors of enlightenment, monk, one is called 'wise, not an idiot'."
The fifth.