We can at least try to understand our own motives, passions, and prejudices, so as to be conscious of what we are doing when we apeal to those of others. This is very difficult, because our own prejudice and emotional bias always seems to us so rational.
T. S. EliotHumility is the most difficult of all virtues to achieve; nothing dies harder than the desire to think well of self.
T. S. Eliot