If happiness, then, is activity expressing virtue, it is reasonable for it to express the supreme virtue, which will be the virtueof the best thing.

To learn is a natural pleasure, not confined to philosophers, but common to all men.

Bad people...are in conflict with themselves; they desire one thing and will another, like the incontinent who choose harmful pleasures instead of what they themselves believe to be good.

Not to get what you have set your heart on is almost as bad as getting nothing at all.

The angry man wishes the object of his anger to suffer in return; hatred wishes its object not to exist.

...we are all inclined to ... direct our inquiry not by the matter itself, but by the views of our opponents; and, even when interrogating oneself, one pushes the inquiry only to the point at which one can no longer offer any opposition. Hence a good inquirer will be one who is ready in bringing forward the objections proper to the genus, and that he will be when he has gained an understanding of the differences.

And, speaking generally, passion seems not to be amenable to reason, but only to force.