This volume explores the three normative sciences that Peirce distinguished (aesthetics, ethics, and logic) and their relation to phenomenology and metaphysics. The essays approach this topic from a variety of angles, ranging from questions concerning the normativity of logic to an application of Peirce's semiotics to John Coltrane's "A Love Supreme." A recurrent question throughout is whether a moral theory can be grounded in Peirce's work, despite his rather vehement denial that this can be done. Some essays ask whether a dichotomy exists between theoretical and practical ethics. Other essays show that Peirce's philosophy embraces meliorism, examine the role played by self-control, seek to ground communication theory in Peirce's speculative rhetoric, or examine the normative aspect of the notion of truth.