Abstract

An agent is said to be morally weak if and only if and he fails to act, when it is in his power to do so, in conformity with an applicable moral principle he accepts. A full explication of the important concepts employed in this definition would be very lengthy indeed. I shall limit my account to those features of the concepts of 'accepting a moral principle' and 'acting voluntarily' which are relevant to understanding that there are many types of moral weakness. The first two sections of this essay will be devoted to the relevant features of these concepts; the third to expounding eight types of moral weakness.