In all fighting, the direct method may be used for joining battle, but indirect methods will be needed in order to secure victory. 277

Indirect tactics, efficiently applied, are inexhaustible as Heaven and Earth, unending as the flow of rivers and streams; 278 like the sun and moon, they end but to begin anew; like the four seasons, they pass away to return once more. 279

There are not more than five musical notes, 280 yet the combinations of these five give rise to more melodies than can ever be heard.

There are not more than five primary colors, 281 yet in combination they produce more hues than can ever been seen.