Philosophy, science, and common sense all refer to propositions--things we believe and say, and things which are true or false. But there is no consensus on what sorts of things these entities are. Jeffrey C. King, Scott Soames, and Jeff Speaks argue that commitment to propositions is indispensable, and each defend their own views on the debate.
Overall, the book is a splendid contribution to the field, and does genuinely offer 'new thinking' about the perennially problematic status of propositions.