It is perfectly possible to tell a lie without saying anything untrue. As a matter of fact, the most effective liars are those who never deliberately say anything that is not so; they simply tell a piece of the truth and refuse to tell all of it.

Let me illustrate the lying power of partial truth. I know a man who, with two other men, deliberately planned to get a fourth man in a particular situation where he would be utterly at the mercy of the three men. It would then be possible for them to kill their victim and, to use the vernacular of the street, they were confident they could "get away with it." With meticulous care they worked out every detail of their sinister plot. The unsuspecting victim was lured to the prepared trap. The timing was perfect. He was completely unarmed. The signal…