Do not laugh excessively, for it will diminish your dignity; and do not joke excessively, for people will begin to take you lightly.
Tale-bearing is a sin that is not easily forgotten.
Beware of backbiting, for backbiting is graver than adultery; a person may commit adultery and repent, and God accepts his repentance, whereas the backbiter is not forgiven until the person he backbit forgives him.
Indeed, showing gentleness to the enemies of God is among the best charity a person can do for himself and his brothers.
Your good deed is that by which you better your day, and your evil deed is that by which you cause discord in your community.
What a terrible heritage is bad manners!
The pinnacle of wisdom is treating people with kindness.
Do not argue with a gentle person nor with a fool, for the gentle person will despise you and the fool will harm you.
Engaging in lighthearted humor with one another is part of good character; it is a means to bring joy to your fellow.
Indeed, obscenity and shamelessness are not traits of good character.
My son, protect your hearing from such gossip; for indeed, he looked at the foulest thing in his own vessel and emptied it into yours!
Whoever knows their true worth and acts accordingly is honored by people.
Whoever has bad character will be despised by their own family.
It is sufficient flaw in a person to have three traits: 1. being aware of faults in others while being ignorant of them in oneself, 2. feeling ashamed of others for flaws that one also possesses, 3. causing trouble to one's companion over things that do not concern them.
A harsh response arises from harsh speech.
When gentleness is regarded as harshness, then harshness becomes gentleness.
Know that there are two vices among you: laughing without wonder (or reason), and being lazy (during the day) without having stayed awake (late at night).
O believer! Truly, this knowledge and good conduct are the worth of your soul. So strive to learn both, for as your knowledge and conduct increase, your worth and honor increase.
O my dear son! Do not be aggressive toward people lest they hate you, do not be so meek that they humiliate you, do not be so sweet that they swallow you whole, and do not be so bitter that they spit you out.
Loud, boisterous laughter comes from evil.
A wise man said, "A believer should not humiliate oneself." He was asked, "How does one humiliate oneself?" He replied, "By getting into a situation where one has to apologize afterwards."
Excessive joking is foolishness and misconduct.
Beware of harboring ill suspicion against people, for bad suspicion spoils devotion and magnifies sins.
Whoever exposes the secrets of another, the secrets of their own home will be exposed; whoever draws the sword of oppression will be destroyed by it; whoever digs a pit for their brother will fall into it; whoever mingles with fools will be disgraced; whoever keeps company with scholars will be honored; and whoever enters bad places will be accused.
Whoever makes joking their habit will never be taken seriously.
Whoever responds to a fool with foolishness has accepted what was offered to them, and thus followed the fool's example.
Avoid idle talk, for its smallest fault is drawing blame.
A wise person should converse with an ignorant person in the same manner that a physician speaks with a patient.
Being a bad neighbor and mistreating virtuous people are among the greatest acts of meanness.
God dislikes every vile, gluttonous, and quarrelsome person roaming the markets who is like a corpse at night, like a donkey by day, knowledgeable of worldly matters, and ignorant of the hereafter.