Book 2
27
But moreover with everything its corruption and perversion are not in any chance direction, but leads to the contrary and intermediate states. For it is not possible to go outside these, since even error does not lead to any chance thing, but, in the case of things that have contraries, to the contraries, and to those contraries that are contrary according to their science.This division of contraries is unusual: elsewhere (e.g. Aristot. Met. 1061a 18) Aristotle merely states that contraries are the objects of the same science.
28
It therefore necessarily follows that both error and purposive choice take place from the middle point to the contraries (the contraries of the middle being the more and the less).—And the cause is pleasure and pain; for things are so constituted that the pleasant appears to the spirit good and the more pleasant better, the painful bad and the more painful worse.
29
So from these things also it is clear that goodness and badness have to do with pleasures and pains; for they occur in connection with the objects of purposive choice, and this has to do with good and bad and what appears to be good and bad, and pleasure and pain are by nature things of that kind.
30
It therefore follows that since moral goodness is itself a middle state and is entirely concerned with pleasures and pains, and badness consists in excess and defect and is concerned with the same things as goodness, moral goodness or virtue is a state of purposively choosing the mean in relation to ourselves in all those pleasant and painful things in regard to which according as a person feels pleasure or pain he is described as having some particular moral qualityThe connection of pleasure and pain with virtue is here clearer than in Nic. Eth., and forms part of the definition (Stocks).(for a person is not said to have a particular moral character merely for being fond of sweets or savories).
