Edmund Husserl was a philosopher, mathematician, and founder of the philosophical school of phenomenology. Professor Moran will argue that Husserl was correct to see naturalism as the dominant tendency of twentieth-century science and philosophy. Naturalism can be understood in many different senses, but it is typically defined by its commitment to science as the arbiter of what is objective. Husserl took naturalism to be self-refuting. Moran will discuss Husserl’s arguments, and in particular, the manner in which Husserl redefines ‘objectivity’ within his transcendental idealism, which is his alternative to naturalism.