Abstract: Characterizes certain notions that are needed for stating the central claim of the book.Facts are to be identified with states of affairs, which are the truth-makers for true propositions. The concept of a state of affair's existence or actuality should be taken as basic and unanalysable.The dynamic view of time to be defended requires that not only the concept of actuality simpliciter but also the concept of actuality as of a given time is treated as basic.

Keywords: actuality, existence, facts, propositions, states of affairs, truth-makers,