Jafar as-Sadiq (A. S.) was one of the most patient and tolerant teachers of his time. He used to give lectures on Islamic theology every day. After his lectures, he would listen and reply to the objections of his students and critics. He had asked his students and critics, who attended his lectures, not to interrupt him during his lectures. They were quite free to ask him any question or raise any objection after the classes were over.