Truth-telling is a virtue, isn’t it? That’s what we’re told. You should be an honest person, and honesty involves telling the truth when asked, not hiding things, not deceiving people. Immanuel Kant is infamous for taking this to the extreme, even to the point of demanding that we tell the truth when a potential murderer asks us where our friend is. For Kant, any lie would be an instance of treating someone else as a means to an end rather than an end in themselves. It would be a failure t...