2. It is useful, and much evil is thereby avoided, if a man devote
himself thereto who else had wasted his time.

3. It is useful when no one thinks so, for a man will have great joy if
he occupy himself with that which is so rich in joys.

4. It is useful because a man gaineth great and lasting memory thereby
if he applieth it aright.

5. It is useful because God is thereby honoured when it is seen that He
hath bestowed such genius upon one of His creatures in whom is such
art. All men will be gracious unto thee by reason of thine art.

6. The sixth use is that if thou art poor thou mayest by such art come
unto great wealth and riches.

II. The Second Division of the book treateth of Painting itself; it also
is threefold.

A. The first part is of the freedom of painting; in six ways.

B. The second part is of the proportions of men and buildings, and what
is needful for painting; in six ways.[90]

1. Of the proportions of men.
2. Of the proportions of horses.
3. Of the proportions of buildings.
4. Of perspective.
5. Of light and shade.