thus i heard a simile, there was this hunter who was chasing
this deer. the deer ran passed a monk/master and went toward the
west. the hunter later
come to ask the master regarding where the deer had gone. the
master told the hunter that it had went toward the
east. of such case, the master though commit false
speech karma, but the karma weight of saving Both the deer from
dying and saving the hunter from commiting killing had overide his
false speech karma.
another story: Mencius was told to keep an honorable secret of a
particular country's plan to attack Wei country. However, Mencius
went to inform the Wei country, thinking that He rather be
dishonored than cause a war to break between 2 countries and
suffering of many.
so wisdom is still very important.
---
here's Master Jing Jie's
excellent explaination on the Vinaya:
how can the body of precept be destroy?
it's when one commit the 4 evil deeds - kill, steal, sexual
misconduct and lying. and/or, one no longer wish to attain the
unsurpassed bodhi, and live a un-righteous livelihood.
even if you break the percepts, we can only say you have a little
mistakes. A inperfect/flawed bodhisattva. There's room for
improvement. The body of precept/aspiration is not broken.
don't be afriad that after you take the precepts that you will
break the precepts. Past masters would prefer one to uphold percept
even if you break it and enter evil realms than one who don't
uphold precepts and attain heavenly rebirth. Why? because even the
former enter the evil realms, with the strength of the precepts,
one can spring out easily, compare to the latter who do not.
Chances for the latter to commit evil is inevitable.
Buddha not afraid you have affliction or you commit evil. Buddha
most afraid you don't plant good seeds. As light can destroy
darkness. Why is there no darkness, as there's light. Or to turn
around is the safe shore. Buddha only afraid you don't turn around.
As long as you can turn over a new leaf, there's always hope. Why
do people have afflictions, because their good merits are not
enough.
ps: if you study precept/lui/Vinaya carefully, it actually got 4
factors (which i need to check what are they call), but of which
there's one which state that if it's a suitable
time to break the precept and you do not break it, you are
truly breaking the precept. 
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