There is an important family of semantic notions that are applied to thoughts and to the conceptual constituents of thoughts--as when one says that the thought that the Universe is expanding is true. Christopher Hill presents a theory of the content of such notions. That theory is largely deflationary in spirit. It represents a broad range of semantic notions free from substantive metaphysical and empirical presuppositions. He also explains the relationship of mirroring or semantic correspondence linking thoughts to reality.