But the two things in themselves, since each has its difference not in it but in the other, are not therefore distinct things; the thing in itself, in relating as it should to the other extreme as to another thing in itself, relates to it as to something non distinguished from it, and the external reflection that should constitute the mediating reference between the extremes is a relation of the thing in itself only to itself, or is essentially its reflection within itself; the reflection is, therefore, determinateness existing in itself, or the determinateness of the thing in itself.