  Propositions, we shall say, are the sharable objects of the attitudes and the primary bearers of truth and falsity. This stipulation rules out certain candidates for propositions, including thought- and utterance-tokens, which presumably are not sharable, and concrete events or facts, which presumably cannot be false. These consequences fit well with contemporary usage. Our definition leaves open many of the questions dividing propositionalists: which additional roles are propositions fit to play? would propositions have to be mind-independent or abstract? what individuation conditions would they have? how would they relate to facts? We examine these issues below, as well as the fundamental issue of whether there are propositions at all.