If you build an army of 100 lions and their leader is a dog, in any fight, the lions will die like a dog. But if you build an army of 100 dogs and their leader is a lion, all dogs will fight as a lion
In a conquered country benevolence is not humanitarianism. It is a general political axiom that a conqueror must not inspire a good opinion of his benevolence until he has demonstrated that he can be severe with malefactors.