It is by means of truth that man is exalted...
It is by means of truth that man is exalted, the society is strengthened and the world becomes prosperous. Falsehood is the collection of humiliation and disgrace. It is, therefore, evident that there can be nothing worse than war. It is the cradle of all absurdities, because doubt prevails, war and falsehood flourishes, and the voice of truth is subdued; whereas peace is truth itself, and whoever violates truth goes astray.
This was the basis of the view and belief held by Ali about war, and this is not also surprising, because this belief was compatible with his idea of freedom and the reliance which he had on the common man and the respect which he had for life as well as for those who were alive. It was for this reason that at times, in order to put to end to trouble and to invite his friends to peace he said: “For your enemies this loss is sufficient that they have gone astray”.
Imam Ali used to ask a sinner and a transgressor to express regret for his lapse so that fighting might not take place. As regards the oppressed persons he used to ask him to accept the apology of the transgressor however big his offence might be. He says: “Accept the apology of a person who apologizes to you”. He also says: “Fight against your worldly desires by means of reason. If you do so the people will continue to love you”.
He, therefore, considered it the best quality for his followers that they should desire peace, hate war and seek safety for themselves as well as for others. As to what qualities his followers should possess he says: “When my followers are angry they do not commit injustice. They are a blessing for their neighbours and a source of security for their companions”. However, hatred for war and unusual inclination towards peace did not mean that Ali should have surrendered before his opponent.
Hatred for war and inclination towards peace does not mean that one should shirk one's responsibilities and leave the mischief-mongers free to do what they like, because war is not a detestable thing in itself, but becomes bad on account of the horrors and destruction which it entails, and peace is not a good thing in itself, but becomes good, because it provides security to the people, provides chances for improving the society, and opens the paths of life before those who are living.
In short, whether it be war or peace, neither of them is intrinsically good or bad. Their goodness or badness is determined with reference to other people.