In chapter one I will try to reconstruct a plot, or a hidden agenda, in the discussion in ethics between the beginning of the twentieth century and 1958, the year of a decisive turning point in ethics, both Anglo-Saxon and Continental, and strangely enough also the year of the beginning of the end of the Cold War, of post-Tridentine Catholicism, and perhaps something else. My hypothesis will be that there are two similar starting points for the Anglo-Saxon and the Continental (...) twentieth-century discussion, the philosophies of Henry Sidgwick and Friedrich Nietzsche, both expressions of some kind of ethical scepticism, and that a third, somewhat analogous starting-point could be found in Émile Durkheim, the proponent of the dream of the morale laïque. I will discuss how far the diagnosis formulated by Karl-Otto Apel of a kind of ‘parallel convergence' between existentialism and analytic philosophy, based on the shared division of facts and values that eventually justified two kinds of 'decisionism' is useful in making sense of the agenda of the discussion. In the second chapter I will discuss the reasons for two parallel U-turns around 1958 which brought back traditional schools of normative ethics, 'deontologism' and utilitarianism, as well as the reasons for criticism to both schools from the heterogeneous alignment of virtue ethics. In the third chapter I will discuss the remarkable phenomenon of the emergence, starting with the Sixties or the early Seventies, of ‘applied’ ethics. I examine the reasons, both theoretical and political, for the revival, the point to which applied ethics may look as a grand return of a casuistic and natural law way of thinking, or in Alan Donagan’s words a case of “reverse subversion” of the modern secular world by traditional Scholastic ways of thinking, and the difficult coexistence between general normative ethics and procedures for settling issues in a ‘reasonable’ way while dissent on issues of principle is as alive as ever. Then I try to draw a provisional moral. My suggestions are that (i) casuistry is more alive than ever; (ii) natural law thinking is more alive than ever; (iii) moral dilemmas never arise; (iv) moral dissent is treatable, with the right strategy; (v) practical philosophy does not need the same degree of exactness as the theoretical sciences but this is no obstacle to its working in practice. (shrink)