In this stimulating introduction, David Woodruff Smith introduces the whole of Husserl's thought, demonstrating his influence on philosophy of mind and language, on ontology and epistemology, and on philosophy of logic, mathematics and science. Starting with an overview of his life and works, and his place in twentieth-century philosophy, and in western philosophy as a whole, David Woodruff Smith introduces Husserl's concept of phenomenology, explaining his influential theories of intentionality, objectivity and subjectivity. In subsequent chapters he covers Husserl's logic, metaphysics, realism and transcendental idealism, and epistemology. Finally, he assesses the significance and implications of Husserl's work for contemporary philosophy of mind and cognitive science. Including a timeline, glossary and extensive suggestions for further reading, Husserl is essential reading for anyone interested in this eminent philosopher, phenomenology or twentieth-century philosophy.