Some believe it to be just friends wanting, as if to be healthy enough to wish health.

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

Neither should men study war with a view to the enslavement of those who do not deserve to be enslaved; but first of all they should provide against their own enslavement, and in the second place obtain empire for the good of the governed, and not for the sake of exercising a general despotism, and in the third place they should seek to be masters only over those who deserve to be slaves.

Whatever we learn to do, we learn by actually doing it; men come to be builders, for instance, by building, and harp players by playing the harp. In the same way, by doing just acts we come to be just; by doing self-controlled acts, we come to be self-controlled ; and by doing brave acts, we become brave.

Knowing yourself is the beginning of all wisdom.

The happy life is thought to be one of excellence; now an excellent life requires exertion, and does not consist in amusement.

When people are friends, they have no need of justice, but when they are just, they need friendship in addition.