Imam Khomeini sheds light on the matter through his theological works as as following:
God forbid, that we should ever belong to that category of people who become aggressive during academic discussions, as some of our students suffer from this intemperance. You have to resist against this bad tendency. Act against it, especially on the occasions of formal functions, which are attended by a great number of scholars and common men.
During the discussions, if you see that the other party is justified in its argument, you are expected to admit your fault and confirm what opponents say. God willing, these meannesses will be eliminated in a short time.
God forbid, that the words of some scholars, who claimed to be divinely inspired and said that it was revealed that the quarrel among the inhabitants of hell, mentioned by God, is that of the scholars and transmitters of ahadith, should ever be true. Even if you do not believe in the authenticity of this tradition, even then you should carefully try to get rid of this habit. See the following account:
It is narrated from many companions of the Prophet (S) that once as the Prophet (S) came to them they were engaged in wrangling over a religious issue.
The Prophet (S) of Islam was greatly displeased and was indignant to this extent that they had never seen him before in such an anger, Imam further explains.
The Prophet (S) told them it was because of this habit of wrangling that their precursors were destroyed, and he added that a true believer would never wrangle. The Prophet (S) asked them to stop wrangling and told them that he would not act as an intercessor to any wrangler. Wrangling occupies the second place after idolatry among the things forbidden by God Almighty.
The Prophet (S) is reported to have also said that unless a believer refrains from wrangling and altercation he cannot know the truth, in spite of his position being correct.
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The great prophets of God were sent to this world with the light of Divine Laws