The topic of this dissertation is how to understand the notion of speaker\u27s meaning, and the line I pursue is Gricean. My thesis is that speaker\u27s meaning consists of a specific type of nested audience-directed intentions, which I call M-intentions. I first introduce the Gricean distinction between natural and non-natural meaning, where speaker\u27s meaning belongs to the latter category. Natural meaning is factive and agent-independent, while non-natural meaning is non-factive and agent-dependent. Building on this distinction, I argue that in order to understand what communication amounts to, we ought to distinguish between communication as indication, communication as influencing and communication as overt communication. The first c...