There is an awakening from childhood to youth and from youth to mature age and during this development one's point of view, one's outlook in life changes. Also sometimes in one's life, when one has gone through an illness or a great suffering, at the end of it the whole outlook on life has changed. One also sees that a person who has taken a long journey after having come back has quite changed. Also after a friendship, after a pupilship, after a marriage a sudden change comes in the outlook of a person, and we find that there are some cases where the change is so great that we may say that he is an entirely new person.