'Have we not shown that those things which most men desire are not true and perfect good precisely for this cause--that they differ severally one from another, and, seeing that one is wanting to another, they cannot bestow full and absolute good; but that they become the true good when they are gathered, as it were, into one form and agency, so that that which is independence is likewise power, reverence, renown, and pleasant delight, and unless they are all one and the same, they have no claim to be counted among things desirable?' 'Yes; this was clearly proved, and cannot in any wise be doubted.' 'Now, when things are far from being good while they are different, but become good as soon as they are one, is it not true that these become good by acquiring unity?' 'It seems so,' said I. 'But dost not thou allow that all which is good is good by participation in goodness?' 'It is.' 'Then, thou must on similar grounds admit that unity and goodness are the same; for when the effects of things in their natural working differ not, their essence is one and the same.' 'There is no denying it.' 'Now, dost thou know,' said she, 'that all which is abides and subsists so long as it continues one, but so soon as it ceases to be one it perishes and falls to pieces?' 'In what way?' 'Why, take animals, for example. When soul and body come together, and continue in one, this is, we say, a living creature; but when this unity is broken by the separation of these two, the creature dies, and is clearly no longer living. The body also, while it remains in one form by the joining together of its members, presents a human appearance; but if the separation and dispersal of the parts break up the body's unity, it ceases to be what it was. And if we extend our survey to all other things, without doubt it will manifestly appear that each several thing subsists while it is one, but when it ceases to be one perishes.' 'Yes; when I consider further, I see it to be even as thou sayest.' 'Well, is there aught,' said she, 'which, in so far as it acts conformably to nature, abandons the wish for life, and desires to come to death and corruption?' 'Looking to living creatures, which have some faults of choice, I find none that, without external compulsion, forego the will to live, and of their own accord hasten to destruction. For every creature diligently pursues the end of self-preservation, and shuns death and destruction! As to herbs and trees, and inanimate things generally, I am altogether in doubt what to think.'