text: As often as you wish to know what is to be avoided or what is to be sought, consider its relation to the Supreme Good, to the purpose of your whole life. For whatever we do ought to be in harmony with this; no man can set in order the details unless he has already set before himself the chief purpose of his life. The artist may have his colours all prepared, but he cannot produce a likeness unless he has already made up his mind what he wishes to paint. The reason we make mistakes is because we all consider the parts of life, but never life as a whole. The archer must know what he is seeking to hit; then he must aim and control the weapon by his skill. Our plans miscarry because they have no aim. When a man does not know what harbour he is making for, no wind is the right wind. Chance must necessarily have great influence over our lives, because we live by chance. It is the case with certain men, however, that they do not know that they know certain things. Just as we often go searching for those who stand beside us, so we are apt to forget that the goal of the Supreme Good lies near us.