If we tell lies to save lives, will that be a sin?

This page, [Lay Buddhist Vows](http://www.katinkahesselink.net/tibet/panchasila.html) , says, > 3. Do not distort fact > This one is usually translated as: don't lie. Again: it wider than that. Sometimes the use of words can make something seem acceptable, when it could also have been said very differently and be totally unacceptable. This would not be a lie, but it would be a distortion of fact. As per above phrase about 3rd precept of Pancha Sila, as a Buddhist if we tell lies it's definitely a sin. But in this modern world sometimes we have to lie: we will lie to our wife, we will lie in the working place, we will lie to our mother father; in this world you cannot find a person who has not lied. So my question is, if tell so many lies to save lives, will it be a sin?