He is passionate about what he believes in. He moves heaven and earth, so to speak, to convince you of his belief, of his position, of his arguments-giving emphasis to the showing of evidence cum the force of deductive and syllogistic reasoning. He rarely raises his voice in anger to convince you; he listens to your arguments. However, in the end, if you remain unconvinced, still he respects you and your opinion. His being passionate is evident in his writings. Also, when he starts writing, you can expect him to finish the article/book within his scheduled timetable.