There was a time when the great founder of Islamic republic was a prominent teacher in seminary; however, by spiritual self-training he had kept himself committed to ethical codes and principles at every stage of his precious life.
As in the class and remembering his teachers, Imam was very careful to observe an ethical behavior and always referred to all Islamic scholars with respect and reverence.
However, when something was a matter of dispute and disagreement to him, first he tried to explicitly express his own critical views and then would make a comparison between different ideas respectfully to let the audience have the final judgment on the issue.
Imam always recommended his students to apply reasoning in their considerations and judgments either to accept or reject an idea.
Narrated by: Hujjat al-Islam wal Muslimeen Mustafa Zamani
Keeping Pace with the Sunlight, vol. 3, p. 177