But not if evil is the cause of friendship: for in that case nothing will be the friend of any other thing after the destruction of evil; for the effect cannot remain when the cause is destroyed.
True.
And have we not admitted already that the friend loves something for a reason? and at the time of making the admission we were of opinion that the neither good nor evil loves the good because of the evil?
Very true.
But now our view is changed, and we conceive that there must be some other cause of friendship?
I suppose so.
May not the truth be rather, as we were saying just now, that desire is the cause of friendship; for that which desires is dear to that which is desired at the time of desiring it? and may not the other theory have been only a long story about nothing?
Likely enough.
But surely, I said, he who desires, desires that of which he is in want?
Yes.