(2) On the other hand, Utopias--attempted descriptions of a Heaven upon Earth--commonly suffer not only from this, but also from the opposite defect. They are commonly constructed on the principle of merely omitting the great positive evils, which exist at present, with utterly inadequate regard to the goodness of what they retain: the so-called goods, to which they have regard, are, for the most part, things which are, at best, mere means to good--things, such as freedom, _without_ which, possibly, nothing very good can exist in this world, but which are of no value in themselves and are by no means certain even to produce anything of value. It is, of course, necessary to the purpose of their authors, whose object is merely to construct the best that may be possible in this world, that they should include, in the state of things which they describe, many things, which are themselves indifferent, but which, according to natural laws, seem to be absolutely necessary for the existence of anything which is good. But, in fact, they are apt to include many things, of which the necessity is by no means apparent, under the mistaken idea that these things are goods-in-themselves, and not merely, here and now, a means to good: while, on the other hand, they also omit from their description great positive goods, of which the attainment seems to be quite as possible as many of the changes which they recommend. That is to say, conceptions of the Human Good commonly err, not only, like those of the Absolute Good, in omitting some great goods, but also by including things indifferent; and they both omit and include in cases where the limitations of natural necessity, by the consideration of which they are legitimately differentiated from conceptions of the Absolute Good, will not justify the omission and inclusion. It is, in fact, obvious that in order to decide correctly at what state of things we ought to aim, we must not only consider what results it is possible for us to obtain, but also which, among equally possible results, will have the greatest value. And upon this second enquiry the comparative valuation of known goods has a no less important bearing than upon the investigation of the Absolute Good.