 The idea of explaining intentional action through intention-with-which is associated with resistance to causal accounts of acting for a reason. It begins instead with intentional teleology—doing A in order to do B, or with the intention of doing B—treating this as primitive and not involving intention as efficient cause. If we assume that every intentional action is done for a reason, and that this reason can be cast in teleological form, we can identify doing A intentionally with doing A in order to do something else. We thereby unify two guises of intention.