Cicero: “Old men retain their intellects well enough, if only they keep their minds active and fully employed.”

For we contend, for example, with a fellow-citizen in one way, if he is a personal enemy, in another, if he is a rival: with the rival it is a struggle for office and position, with the enemy for life and honour.

Thus apparent expediency is outweighed when placed in the balance against moral rectitude.

But those wars which have glory for their end must be carried on with less bitterness.

The first office of justice is to keep one man from doing harm to another, unless provoked by wrong; and the next is to lead men to use common possessions for the common interests, private property for their own.