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Lesson
The odd number also is that which is separated from the nature and essence of the even number; since the latter can be divided into two equal parts, but the former is prevented from this equality of division by the intervention of unity. In a similar manner also it has three subdivisions: (1) one of these, being the number which is called first and incomposite; (2) another, that which is second and incomposite ; and (3) the third, that which subsists as a medium between these, and naturally derives some thing from both through its alliance to each; which is of itself indeed second and composite, but with reference to others is found to be first and incomposite.