This paper examines the representation of semantic vagueness in discourse as well as the connection between deontic modal meaning and third person reference through the semantics and uses of the Finnish jussive mood. The data used in the analysis come from a collection of newspaper texts and a corpus of dialectal speech. Analyzing jussive forms that give rise to various modal readings, I argue that the two poles of the deontic axis, permission and obligation, are simultaneously present, albeit highlighted to different extents, in the interpretation of a jussive clause. This binary nature of the jussive semantics reveals itself to be a discursive resource: it allows the position of the speaker and other intentional agents to be taken into account in regard to the event that is potentially taking place, thus presenting more than one point of view in the situation. The jussive mood can therefore be regarded as contributing to the dialogical dimension of language.