Distance does not break off the friendship absolutely, but only the activity of it.

Man, as an originator of action, is a union of desire and intellect.

Conscientious and careful physicians allocate causes of disease to natural laws, while the ablest scientists go back to medicine for their first principles.

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.

The vices respectively fall short of or exceed what is right in both passions and actions, while virtue both finds and chooses that which is intermediate.

So we must lay it down that the association which is a state exists not for the purpose of living together but for the sake of noble actions.

A true disciple shows his appreciation by reaching further than his teacher.