Even four harnessed horses cannot bring imprudent words back into the mouth.
Surely it is the maxim of loving-kindness: Do not unto others that you would not have them do unto you.
Which demands a lot of himself and some others, will be free from hatred.
To go beyond is as wrong as to fall short.
If you know, say you know. If you don't know, say you don't know.
Seek Not Every Quality In One Individual.