One of the most effective ways that Napoleon strengthens his rule is his use of the politics of sacrifice. Indeed, "sacrifice" is an often-repeated word in the novel, and Napoleon uses it to excuse what he knows others will see as his blatant disregard for the Seven Commandments of Animalism. For example, when ordering that Animal Farm will engage in trade with human beings and that the hens must sell their eggs, he states that the hens "should welcome this sacrifice as their own special contribution towards the building of the windmill." After facing some objections from the animals about trading with humans, Napoleon tells them that they will not have to come into contact with any human beings, since, "He intended to take the whole burden upon his own shoulders." Like the apples and milk (which the pigs' pretended not to like in the first place), Napoleon masterfully recasts himself as an animal like Boxer — when, of course, the reader sees that the pig and the horse are complete opposites in their selfishness and selflessness. Of course, if any animals ever hint at seeing through Napoleon's false humility, they will be greeted with the same combination of bleating and growls that faced Snowball in Chapter 5.