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But in dealings of exchange such a principle of Justice as this

Reciprocation forms the bond of union, but then it must be

Reciprocation according to proportion and not exact equality,

because by proportionate reciprocity of action the social

community is held together, For either Reciprocation of evil is

meant, and if this be not allowed it is thought to be a servile

condition of things: or else Reciprocation of good, and if this

be not effected then there is no admission to participation which

is the very bond of their union.

And this is the moral of placing the Temple of the Graces

(χάριτες) in the public streets; to impress the notion that there

may be requital, this being peculiar to χάρις[17] because a man

ought to requite with a good turn the man who has done him a

favour and then to become himself the originator of another

χάρις, by doing him a favour.