This is a translation of Nicolai Hartmann’s article “Der Megarische und der Aristotelische Möglichkeitsbegriff: ein Beitrag zur Geschichte des ontologischen Modalitätsproblems,” first published in 1937. In this article, Hartmann defends an interpretation of the Megarian conception of possibility, which found its clearest form in Diodorus Cronus’ expression of it and according to which “only what is actual is possible” or “something is possible only if it is actual.” Hartmann defends this interpretation against the then dominant Aristotelian conception of possibility, based (...) on the opposition between dynamis and energeia, and according to which there is always an open multiplicity of simultaneous “possibilities,” the outcome of which remains undetermined. Since, according to Hartmann, reality suffers no indetermination, the Megarian conception of possibility is an account of real possibility, whereas the Aristotelian one is merely an account of epistemic possibility. (shrink)

When an agent intentionally changes something separate from herself—when, say, she opens a bottle—what is the relation between what the agent does and what the patient suffers? This paper defends the Aristotelian thesis that action is to passion as the road from Thebes to Athens is to the road from Athens to Thebes: they are two aspects of a single material reality. Philosophers of action tend to think otherwise. It is generally taken for granted that intentional transactions must be analyzed (...) in terms of a causal relation. Controversy surrounds the question what the causal relata are: event-causalists claim that both of the relata are events; agent-causalists claim that the first relatum is an agent, and they dispute among themselves whether the second is an event or a terminal state of the patient. But the entire controversy assumes the necessity of some causal analysis of transactions. This paper argues that, far from being necessary, no such analysis is even possible. (shrink)