And for this there are two reasons to be given; one from the nature of the thing itself, because from the one extreme being nearer and more like the mean, we do not put this against it, but the other; as, for instance, since rashness is thought to be nearer to courage than cowardice is, and to resemble it more, we put cowardice against courage rather than rashness, because those things which are further from the mean are thought to be more contrary to it. This then is one reason arising from the thing itself; there is another arising from our own constitution and make: for in each man’s own case those things give the impression of being more contrary to the mean to which we individually have a natural bias. Thus we have a natural bias towards pleasures, for which reason we are much more inclined to the rejection of all self-control, than to self-discipline.
These things then to which the bias is, we call more contrary, and so total want of self-control (the excess) is more contrary than the defect is to perfected self-mastery.
Chapter IX.
Now that Moral Virtue is a mean state, and how it is so, and that it lies between two faulty states, one in the way of excess and another in the way of defect, and that it is so because it has an aptitude to aim at the mean both in feelings and actions, all this has been set forth fully and sufficiently.
And so it is hard to be good: for surely hard it is in each instance to find the mean, just as to find the mean point or centre of a circle is not what any man can do, but only he who knows how: just so to be angry, to give money, and be expensive, is what any man can do, and easy: but to do these to the right person, in due proportion, at the right time, with a right object, and in the right manner, this is not as before what any man can do, nor is it easy; and for this cause goodness is rare, and praiseworthy, and noble.
Therefore he who aims at the mean should make it his first care to keep away from that extreme which is more contrary than the other to the mean; just as Calypso in Homer advises Ulysses,
“Clear of this smoke and surge thy barque direct;”
because of the two extremes the one is always more, and the other less, erroneous; and, therefore, since to hit exactly on the mean is difficult, one must take the least of the evils as the safest plan;[[21]] and this a man will be doing, if he follows this method.
We ought also to take into consideration our own natural bias; which varies in each man’s case, and will be ascertained from the pleasure and pain arising in us. Furthermore, we should force ourselves off in the contrary direction, because we shall find ourselves in the mean after we have removed ourselves far from the wrong side, exactly as men do in straightening bent timber.[[22]]
But in all cases we must guard most carefully against what is pleasant, and pleasure itself, because we are not impartial judges of it.