Is it moral to lie to a murderer?
Are you arguing that there is nothing intrinsically wrong with lying? — tim wood
Yes I was arguing there is nothing intrinsically right or wrong with the act of lying. But on second thought, I find that lying is different from other acts. To lie is to intentionally give false information. So unlike many other acts, we cannot separate the act and the intention for the case of lying, according to its very definition.
In this light, Kant is consistent. Lying is wrong however good your reason may be, because the intention to provide false information is wrong; you are not respecting the dignity of the person, be it a murderer or otherwise, and his rights to truth, when you lie. (The act of providing false information may not be wrong though, for example, when you are acting unintentionally.)