The Commens Dictionary
Quote from ‘Letters to Mario Calderoni’
I find that there are in the phaneron,
2nd, 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.