I am sorry to have to trouble you with a new word; but I think you are prepared for it, since impressionism professes to be only a more natural and real way of seeing things. Of _seeing_ things, that is the point. It does not take account of what things are, but of the _impression_ they produce upon our mind, when they appear before our eyes. You are at work in school, and a stranger enters the class room. He converses for a few minutes with the teacher and then goes out. What sort of man was he? If there are twenty children in the class, and each, on arriving home, relates the circumstance of the visit, there will probably be twenty different impressions of the visitor’s appearance. They will agree in some points and differ in others; yet each one of the impressions may be a true one--as far as it goes. How far it goes will depend on the quickness and thoroughness of your observation. But anyhow, it will not include a great number of details; it will rather be a general impression.