'Traditionally, the meaning of a sentence is understood in terms of the conditions under which it is true. A shortcoming of this analysis is that it cannot capture the meaning of questions, because they are not true or false. The recently developed framework of inquisitive semantics identifies the meaning of a sentence with the conditions under which it is supported by a given information state. Within this framework, I study the interaction between modality and questions, from a linguistic as well as from a logical perspective.'