Page:Metaphysics by Aristotle Ross 1908 (deannotated).djvu/116

 other, or which being in the same genus have a difference, or which have a contrariety in their substance; and contraries are other than one another in species (either all contraries or those which are so called in the primary sense ), and so are those things whose formulae differ in the infima species of the genus (e.g. man and horse are indivisible in genus, but their formulae are different), or which being in the same substance have a difference. 'The same in species' has the various meanings opposite to these.

Chapter 11

The words 'prior' and 'posterior' are applied (1) to some things (on the assumption that there is a first, i.e. a beginning, in each class) because they are nearer some beginning determined either absolutely and by nature, or by reference to something or in some place or by certain people, e.g. things are prior in place because they are nearer either to some place determined by nature, e.g. the middle or the last place, or to some chance object; and that which is further is posterior. — Other things are prior in time; some by being further from the present, i.e. in the case of past events (for the Trojan war is prior to the Persian, because it is further from the present), others by being nearer the present, i.e. in the case of future events (for the Nemean games are prior to the Pythian, if we treat the present as beginning and first point, because they are nearer the present). — Other things are prior in movement; for the things that