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And for these reasons this Friendship is thought to combine the

profitable and the pleasurable: it will be also based upon virtue

if they are good people; because each has goodness and they may

take delight in this quality in each other. Children too are

thought to be a tie: accordingly the childless sooner separate,

for the children are a good common to both and anything in common

is a bond of union.

The question how a man is to live with his wife, or (more

generally) one friend with another, appears to be no other than

this, how it is just that they should: because plainly there is

not the same principle of Justice between a friend and friend, as

between strangers, or companions, or mere chance

fellow-travellers.

Chapter XIII.