The Commens Dictionary

Quote from ‘Letters to Mario Calderoni’

I find that there are in the phaneron,
[—]
2^nd, elements each of which is such as it is relatively to to something over against it, regardless of any third. Such an element may also have a character in itself, a priman character, inseparable from what it is to the other. But however inseparable that priman character may be, it can be distinguished from the Secundan element, which I give to that which is such as it is to another, regardless of any third.