Much the same kind of thing takes place in other cases, when a person is engaged in two different Workings at the same time: that is, the pleasanter of the two keeps pushing out the other, and, if the disparity in pleasantness be great, then more and more till a man even ceases altogether to work at the other.
This is the reason why, when we are very much pleased with anything whatever, we do nothing else, and it is only when we are but moderately pleased with one occupation that we vary it with another: people, for instance, who eat sweetmeats in the theatre do so most when the performance is indifferent.
Since then the proper and peculiar Pleasure gives accuracy to the Workings and makes them more enduring and better of their kind, while those Pleasures which are foreign to them mar them, it is plain there is a wide difference between them: in fact, Pleasures foreign to any Working have pretty much the same effect as the Pains proper to it,[1] which, in fact, destroy the Workings; I mean, if one man dislikes writing, or another calculation, the one does not write, the other does not calculate; because, in each case, the Working is attended with some Pain: so then contrary effects are produced upon the Workings by the Pleasures and Pains proper to them, by which I mean those which arise upon the Working, in itself, independently of any other circumstances. As for the Pleasures foreign to a Working, we have said already that they produce a similar effect to the Pain proper to it; that is they destroy the Working, only not in like way.
Well then, as Workings differ from one another in goodness and badness, some being fit objects of choice, others of avoidance, and others in their nature indifferent, Pleasures are similarly related; since its own proper Pleasure attends or each Working: of course that proper to a good Working is good, that proper to a bad, bad: for even the desires for what is noble are praiseworthy, and for what is base blameworthy.
Furthermore, the Pleasures attendant on Workings are
