ei was gained in 341 B.C., may be dismissed
as chronological impossible. Whence these data were obtained by
Teng Ming-shih I do not know, but of course no reliance whatever
can be placed in them.
An interesting document which has survived from the close of
the Han period is the short preface written by the Great Ts`ao
Ts`ao, or Wei Wu Ti, for his edition of Sun Tzu. I shall give it
in full: --

I have heard that the ancients used bows and arrows to
their advantage. [10] The SHU CHU mentions "the army" among
the "eight objects of government." The I CHING says:
"'army' indicates firmness and justice; the experienced
leader will have good fortune." The SHIH CHING says: "The
King rose majestic in his wrath, and he marshaled his
troops." The Yellow Emperor, T`ang the Completer and Wu Wang
all used spears and battle-axes in order to succor their
generation. The SSU-MA FA says: "If one man slay another of
set purpose, he himself may rightfully be slain." He who
relies solely on warlike measures shall be exterminated; he
who relies solely on peaceful measures shall perish.
Instances of this are Fu Ch`ai [11] on the one hand and Yen
Wang on the other. [12] In military matters, the Sage's rule
is normally to keep the peace, and to move his forces only
when occasion requires. He will not use armed force unless
driven to it by necessity.
Many books have I read on the subject of war and
fighting; but the work composed by Sun Wu is the profoundest
of them all. [Sun Tzu was a native of the Ch`i state, his
personal name was Wu. He wrote the ART OF WAR in 13 chapters
for Ho Lu, King of Wu. Its principles were tested on women,
and he was subsequently made a general. He led an army
westwards, crushed the Ch`u state and entered Ying the
capital. In the north, he kept Ch`i and Chin in awe. A
hundred years and more after his time, Sun Pin lived. He was
a descendant of Wu.] [13] In his treatment of deliberation
and planning, the importance of rapidity in taking the field,
[14] clearness of conception, and depth of design, Sun Tzu
stands beyond the reach of carping criticism. My
contemporaries, however, have failed to grasp the full
meaning of his instructions, and while putting into practice
the smaller details in which his work abounds, they have
overlooked its essential purport. That is the motive which
has led me to outline