Itachi is a calm, humble and insightful man. Things he says are unbiased and accurate. he is distant and observse individuals. Although this approach prevented him from becoming close with many people, it enabled him to think and act without prejudice or preconceptions, instead evaluating things strictly on their own merits. A pacifist at heart, he did not actually like fighting and would avoid it when he could Itachi was possessed of a wrathful and merciless side when those he loved were hurt.