  Reinach here refers specifically to claims and obligations. He asserts that they exist just as much as do trees and houses. Clearly, they are not physical entities, but neither are they mental. They do indeed presuppose a person as their “bearer”—that is, real claims and obligations always belong to someone. In addition, psychological properties may correspond to claims and obligations; for example, one may feel entitled or feel obligated. However, if I accept a car loan and contractually agree to pay back the loan over a 36-month period, my obligation does not cease to exist even if such feelings fade away and even if I forget about the obligation completely. The very fact that a claim or obligation may last for years without change speaks against any alleged reduction to something psychological, for there is nothing in the psychological (or indeed in the physical) domain that remains static over time.