there is something to be gained; fight not unless the position is
critical.
[Sun TzÅ may at times appear to be over-cautious, but he never goes so
far in that direction as the remarkable passage in the _Tao Te Ching_,
ch. 69. "I dare not take the initiative, but prefer to act on the
defensive; I dare not advance an inch, but prefer to retreat a foot."]