The shield of truth is the mentality that the most important thing is truth. Those that wield it, hold truth as their torchlight to walk by. They fear and care little on what people know. It does not matter, all that matters to them is what they know. The realization is that they are who they are. No one is worth changing for. If they cannot be accepted by those around for being themselves then it is time to move on. They carry a great disdain to those that lie. Truth becomes almost to the level of a religion. They have realized that in reality there is no way to run are hide from the truth. It will always catch up. Instead of the truth catching them and crushing their world of the mind they create, they have truth become the basis of their reality.