For 10 points, name this powerful romantic feeling.
Max Scheler attributes to this concept the emergence of "ever-higher value in [its] object." Robert Nozick is one of many advocates of a "union view" of this concept, criticism of which has led to the impossibly dry definition of this concept as "robust concern." The elemental philosophy of Empedocles opposed this concept to "strife." A threefold division of this concept existed in the Greek concepts of agape, eros, and philia. For 10 points, name this powerful romantic feeling.
Max Scheler attributes to this concept the emergence of "ever-higher value in [its] object.
{love}