### Quantity

 Paragraph 1 Quantity is either discrete or continuous. Paragraph 2 Instances of discrete quantities are number and speech; Paragraph 3 In the case of the parts of a number, there is no common boundary at which they join. Paragraph 4 The same is true of speech. Paragraph 5 A line, on the other hand, is a continuous quantity, for it is possible to find a common boundary at which its parts join. Paragraph 6 Space and time also belong to this class of quantities. Paragraph 7 Quantities consist either of parts which bear a relative position each to each, or of parts which do not. Paragraph 8 Strictly speaking, only the things which I have mentioned belong to the category of quantity: Paragraph 9 Quantities have no contraries. Paragraph 10 Again, whether we define them as quantitative or not, they have no contraries: Paragraph 11 Moreover, if these were contraries, they would themselves be contrary to themselves. Paragraph 12 It is in the case of space that quantity most plausibly appears to admit of a contrary. Paragraph 13 Quantity does not, it appears, admit of variation of degree. Paragraph 14 The most distinctive mark of quantity is that equality and inequality are predicated of it. Paragraph 15 That which is not a quantity can by no means, it would seem, be termed equal or unequal to anything else.

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