Kindness in Speech
Sima Niu asked about humaneness. The Master said, 'The humane person is careful in speech.' Sima Niu asked, 'Careful in speech? Is that really all humaneness is?' The Master said, 'When doing what is right is difficult, how can one not be careful in speech?'
Sima Niu is an impulsive figure who speaks before thinking. Confucius tailors his answer to the student: for this particular person, humaneness begins with slowing down his tongue. The key insight is that careless speech can undo all other virtues. Being 'careful' (訒, rèn) means pausing before words leave the mouth.