1. Trust Allah

Trusting in Allah is the expense for achieving whatever worthwhile and the ladder toward whatever elevating.

al-'Allama al-Majlisi, Bihar al-anwar, vol.78, p.364.

2. The All-Present 

Feeling Allah in every breath is more advantageous than exhausting your body in worshipping Him.

al-'Allama al-Majlisi, Bihar al-anwar, vol.78, p.364.

3. Four Things a Believer Needs 

The believer is in need of Allah's favor, his/her inner guide, and being open to the goodwill of the well-wishers.

 Ibn Shu'ba al-Harrani, Tuhaf al-'uqul, p. 457.

4. Visiting Friends 

Visiting your friends, even for a short time, improves your health and elevates your mind.

al-Shaykh al-Mufid, Al-Amali, p.329.

5. Do not Trust Unheedfully 

Trusting someone before making sure [of his/her personality] ends up in pain and catastrophe.

al-'Allama al-Majlisi, Bihar al-Anwar, vol.78, p.364.

6. Prosperity 

The believer prospers in not depending on others.

 al-Shaykh al-Mufid, Al-Amali, p.109.

7. The Hidden Secret

Life reveals the hidden secrets to you, [as it goes by]. 

 al-Shaykh al-Mufid, Al-Amali, p.365.

8. Allah's Supervision

Know that you are constantly under Allah's supervision, so beware of yourself.

Ibn Shu'ba al-Harrani, Tuhaf al-'uqul, p. 455.

9. Wrong Deeds

If you approve of a wrong deed, you will be considered to have a share in committing it.

 al-'Allama al-Majlisi, Bihar al-Anwar, vol.75, p.82.

10. Ask Your Needs from Allah

Whoever turns to anyone other than Allah, Allah will leave his/her matters to that other person. 

al-'Allama al-Majlisi, Bihar al-anwar, vol.68, p.155.

11. Don't Be Pretentious 

Don't pretend to be Allah's friend while being His enemy in secret. 

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p.365.

12. Going through a Deed

If you are confused about entering a deed, you'll be desperate in coming out of it.

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p.364.

13. Receiving Affection

You receive affection through gaining three characteristics; being fair in your relations, sympathizing [with others] in their hardship and happiness, and keeping your heart unstained [from sins]. 

Baha' al-Din 'Ali b. 'Isa al-Irbili, Kashf al-ghumma fi ma'rifat al-a'imma, vol.3, p.139.

14. A Mischievous Person

Avoid befriending a mischievous person, since he/she is like a bare blade whose look is alluring, while its impact [wound] is hideous. 

al-'Allama al-Majlisi, Bihar al-anwar, vol.74, p.198.

15. Generosity 

The good that generous people do for others benefits them more than the ones in need of help since its reward, honor, and reputation belong to them. Therefore, any favor that one does first benefits him/herself. So he/she shouldn't expect to be gratified for what he/she has done. 

Baha' al-Din 'Ali b. 'Isa al-Irbili, Kashf al-ghumma fi ma'rifat al-a'imma, vol.3, p.137.

16. Sincerity 

The best worship is sincerity in [intention]. 

Warram b. Abi Firas al-Hilli, Tanbih al-khawatir wa nuzhat al-nawazir , vol.2, p.109.

17. Listening to Someone

When you listen to a speaker, you have turned into his/her slave (follower); if the speaker's words are directed toward Allah Almighty, the listener has glorified Allah, and if his/her words are directed toward Satan, the listener has worshipped Satan.

 Muhammad ibn Ya'qub al-Kulayni, al-Kafi, vol.6, p.434.

18. Being Thankful 

The blessing, which is not gratified, is like a sin, which has not forgiven. 

Hasan ibn Muhammad Deilami, Aalam al-din fi Sifat al-Moumenin, p.309.

19. Relying on a Mischievous Person

The least punishment of the one who relies on a mischievous person is being deprived of his/her aspiration.

Aziz Allah, Atarodi, Mosnad Imam al-Jawad (AS), p.248.

20. Unwise Words

Unwise words cause many disputes.

 Sabbagh al-Maliki, Al-Fusul al-muhimma fi ma'rifat al-a'imma, p.274.

21. Piety

If you stay pious despite being in a chaotic situation, Allah will bestow His mercy upon you and show you a way out.

Sabbagh al-Maliki, Al-Fusul al-muhimma fi ma'rifat al-a'imma, p.274.

22. Death

Death is like your sleep at night, except that the fatal sleep is longer, and you won't wake up from it until the Day of Judgement.

al-'Allama al-Majlisi, Bihar al-anwar, vol.3, p.134. 

23. Hope

The needs are requested by hope and answered by divine will. Undoubtedly, the best blessing is well-being.  

Hasan ibn Muhammad Deilami, Aalam al-din fi Sifat al-Moumenin, p.309.

24. Your Trustee and Guardian

The one whom Allah is his/her trustee and guardian will never go astray or get disappointed. 

al-'Allama al-Majlisi, Bihar al-anwar, vol.68, p.155.

25. Salvation

Whoever desires Allah will surely be saved. 

 al-'Allama al-Majlisi, Bihar al-anwar, vol.68, p.155.

26. Foresight

Unexpected incidents and calamities will devour the one who lacks foresight.

al-'Allama al-Majlisi, Bihar al-anwar, vol.68, p.340.

27. Blaming People

Blaming people without any evidence or reason causes anger and distress, and they will never forgive you for this.

al-'Allama al-Majlisi, Bihar al-anwar, vol.71, p.181.

28. Your Daughter's Suitor

If you are sure about the piety, faith, and trustworthiness of your daughter's suitor, agree to his request; otherwise, it will lead to great misfortune and ruin. 
Muhammad ibn Ya'qub al-Kulayni, al-Kafi, vol.5, p.347.

29. The Ignorant

There will be no dispute among people if the ignorant remain silent.

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 81.

30. Consider Different Aspects of a Task

Whoever accepts and submits [to a task, command, etc.] without considering its different aspects, has exposed him/herself to destruction and distress. 

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 364.

31.  Dependence and Independence 

People will be dependent on the one who, by relying on Allah, considers himself independent. And the pious will naturally be favored by people even if they aren't pious themselves. 

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 79.

32. Learning

Strive in gaining knowledge and wisdom, and know that learning is obligatory (Wajib) and discussing [what has been learned] is recommended (Mustahab).

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 80.

33. Imam Jawad (AS) Knowledge 

Knowledge is the means of helping friends and relatives, the reason for and sign of fairness, a gift and means of entertainment in gatherings, the human's companion in travel, and one's mate in lonely times. 

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 80.

34. Modesty and Humility 

Modesty and humility are the adornments of knowledge and wisdom.

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 91.

35. Politeness 

Politeness and being good-natured are signs of reason and forbearance.

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 91.

36. Patience, Poverty, Impulses

Rely on patience in all your life, see poverty as your companion, and stand against your whims and impulses. 

 al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 358.  

37. Prayer (Salat)

One should perform prayer (Salat) in a modest manner. 

al-'Allama al-Majlisi, Bihar al-anwar, vol.74, p. 131.

38. Repentance

The conditions for your repentance to be accepted by Allah are feeling regret at heart, asking for forgiveness by the tongue, compensating for your mistakes, and being determined not to commit those sins again. 

Baha' al-Din 'Ali b. 'Isa al-Irbili, Kashf al-ghumma fi ma'rifat al-a'imma, vol.2, p.349.  

39. Two Kinds of Knowledge 

There are two kinds of knowledge; one is heard, and the other is practiced [besides being heard]. There is no use in the knowledge that is heard but not practiced. 

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 80.

 40. Injustice

The one who does an injustice, the one who participates in it, and the one who is content with it all have a share in it.  

al-'Allama al-Majlisi, Bihar al-anwar, vol.75, p. 81.

Those who do not know Islam very well and those who follow the propaganda of the media, especially in this period of time when several terrorist attacks have been committed by pseudo-Muslim groups, which do not have anything to do with Islam, accuse Islam of encouraging violence and terror. That is absolutely wrong. Islam is the religion of peace and intrinsically promotes peace. The reasons for that will be reviewed next. 

Islam Communicates Intersubjectivity

The greatest miracle of Islam is the Quran; a Book. Books are among the most efficient and prominent means of connecting thoughts and minds. This means that Islam has chosen a very civilized way of communication with human beings; by having dialogues with them. By the means of the Quran, Islam, in the first place, deals with the thinking power of humans and then their emotions. In other words, Islam tries to communicate with people through common sense, mutual understanding, logic and reasoning which consequently prevents harshness or sudden actions caused by the outpouring of emotions. That is while “Book” and “communicating through words” did not serve like that regarding the previous divine religions [i].  

Islam Promotes Adherence to Rules and Regulations

According to Islam, one should truly believe in the Islamic principles and axioms. It means that one should accept these Islamic facts by reasoning and rational search and demonstrate his\her belief in every act and deed; otherwise, if one has not really changed his\her mind to accept Islam or accepts Islam in words but do not practice it, he\she will be a “Muslim” but not a “believer” (Mu'min). This shows that Islam educates the people who are adherent to rational and commonsensical rules and regulations and consequently prevents apostasy and chaos. 

Golden Rule[ii], promoted by Islam

Many suppose that Immanuel Kant was the first who formed and introduced the Golden Rule, a rule of ethical conduct, while this ethical code has been among the teachings of Islam since 1400 years ago. Imam Ali (AS) and other Imams (AS) have emphasized this ethical advice by words and acts and encouraged people not to consider themselves superior to others or do not prefer their benefits to others [1]. 

Imam Ali (AS) has addressed Imam Hassan (AS) as such: “What you prefer for yourself, prefer for others; what you find objectionable for yourself, treat as such for others. Don’t wrong to anyone, just as you don't like to be wronged; do good to others just as you would like others to do good to you; that which you consider immoral for others, consider immoral for yourself” [2]. There is no sign of injustice or cruelty among these words. On the contrary, this is an invitation to get along with others, to respect their preferences and not to expect too much from them. This is simply an encouragement to peace. 

Islam and Holy Struggle (Jihad)

When hearing about Jihad, the first thing that strikes to mind is Al-Qaeda, ISIS and fire, and blood. Many people think that Jihad equals aggression, but that is wrong. Jihad has a clear definition. There exist two types of Jihad in Islam: Defensive and Offensive. Defensive Jihad, as can be guessed from the name, is for the aim of defending the Islamic territory against the assaults and intrusions of outsiders and invaders.

Offensive Jihad aims at liberating people from unjust oppressive regimes and allowing them to search, read and choose the right religion and lifestyle. Many Islamic jurists believe that the Offensive Jihad to invite to Islam is only allowed under certain circumstances; i.e. in the presence of the Imams (AS) and Prophet Muhammad (PBUH&HP). Otherwise, only Defensive Jihad is permitted which is actually obligatory to all Muslims in whatever condition. No one in the whole wide world would admit that defending oneself is aggression; Neither do the Muslims. Then, it is clear that unlike a widespread thought nowadays, Islam is against war and violence.

Islam Considers the Rights of Others over One in peace

There is a theory in Islam: any harm to others or oneself is banned. It explains that a Muslim does not cause any harm to other people or do not misuse rules to cause harm to them [2]. Through this theory, Islam protects the benefits and rights of others. This includes any individual or any group of people. It also covers both Muslim and non-Muslim societies and people, hence, this theory, in fact, reinforces and advertises the peace all around the world.

One Has Rights over Him\Herself

It was explained above that Islam also bans any harm to oneself. In this regard, suicide is illegal (Haram) in Islam. Some might suppose that they own their physical body while it is a divine trust offered to us to do good deeds (16:97), worship God (51:56) and practice the religion. This is another means by which Islam promotes peace all around the world.   

Considering the Islamic approach described above in interaction with the humans, the efforts to establish ethical standards and to form the interrelationship among humans demonstrate the contribution and role of Islam to create a peaceful world.   

Notes:
 
[i] While Old Testament and New Testament are written by humans, the Quran is the divine revelation to Prophet Muhammad (PBUH).
[ii] Golden Rule is the principle of treating others as one would wish to be treated.

References:

1. Nahj al-Balaqa, Letter 31.
2. peace in islam