The more excellent something is the more likely it will be imitated. There are many false diamonds and rubies, but who goes about making counterfeit pebbles? However, the more excellent things are the more difficult it is to imitate them in their essential character and intrinsic virtues. Yet the more variable the imitations be, the more skill and subtlety will be used in making them an exact imitation. So it is with Christian virtues and graces. The devil and men's own deceitful hearts tend to imitate those things that have the highest value. So no graces are more counterfeited than love and humility. For these are the virtues where the beauty of a true Christian is seen most clearly.