AN 3.2
Lakkhana Sutta: Characterized (by Action)
translated from the Pali by
Thanissaro Bhikkhu

"Monks, a fool is characterized by his/her actions. A wise person is characterized by his/her actions. It is through the activities of one's life that one's discernment shines.

"A person endowed with three things is to be recognized as a fool. Which three? Bodily misconduct, verbal misconduct, mental misconduct. A person endowed with these three things is to be recognized as a fool.

"A person endowed with three things is to be recognized as a wise person. Which three? Good bodily conduct, good verbal conduct, good mental conduct. A person endowed with these three things is to be recognized as a wise person.

"Thus, monks, you should train yourselves: 'We will avoid the three things that, endowed with which, one is to be recognized as a fool. We will undertake & maintain the three things that, endowed with which, one is to be recognized as a wise person.' That's how you should train yourselves."

See also: AN 10.176 .