This is the capital defect in Aristotle’s eyes, who being eminently practical, could not like a theory which not only did not necessarily lead to action, but had a tendency to discourage it by enabling unreal men to talk finely. If true, the theory is merely a way of stating facts, and leads to no action.

i.e. the identification of Happiness with the Chief Good.

i.e. without the capability of addition.

And then Happiness would at once be shown not to be the Chief Good. It is a contradiction in terms to speak of adding to the Chief Good. See Book X. chap. 11. [Greek: delon os oud allo ouden tagathon an eiae o meta tenos ton kath’ auto agathon airetoteron ginetai.]

Compare Bishop Butler’s account of “Human Nature as a System” in the Preface to his Sermons.