No one would choose a friendless existence on condition of having all the other things in the world.

It will contribute towards one's object, who wishes to acquire a facility in the gaining of knowledge, to doubt judiciously.

...one Greek city state had a fundamental law: anyone proposing revisions to the constitution did so with a noose around his neck. If his proposal lost he was instantly hanged.

All men by nature desire knowledge.

The pleasures arising from thinking and learning will make us think and learn all the more. 1153a 23

No one chooses what does not rest with himself, but only what he thinks can be attained by his own act.

It [Justice] is complete virtue in the fullest sense, because it is the active exercise of complete virtue; and it is complete because its possessor can exercise it in relation to another person, and not only by himself.