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Therefore the Friendship of the wicked comes to be depraved; for,

being unstable, they share in what is bad and become depraved in

being made like to one another: but the Friendship of the good is

good, growing with their intercourse; they improve also, as it

seems, by repeated acts, and by mutual correction, for they

receive impress from one another in the points which give them

pleasure; whence says the Poet,

"Thou from the good, good things shalt surely learn."

Here then we will terminate our discourse of Friendship. The next

thing is to go into the subject of Pleasure.

BOOK X

Chapter I.