In Consciousness and Persons: Unity and Identity Michael Tye takes on the thorny issue of the unity of consciousness and answers these important questions: What exactly is the unity of consciousness? Can a single person have a divided consciousness? What is a single person? Tye argues that unity is a fundamental part of human consciousness - something so basic to everyday experience that it is easy to overlook. For example, when we hear the sound of waves crashing on a beach and at the same time see a red warning flag, there is an overall unity to our experience; the sound and the red shape are presented together in our consciousness. Similarly, when we undergo a succession of thoughts as we think something through, there is an experience of succession that unifies the thoughts into a conscious whole. Tye's account covers the the unity of perceptual experience at a single time; bodily sensations at a single time; perceptual experiences, bodily sensations, conscious thoughts, and felt moods at a single time; and the unity of experience through time. Turning to the split-brain phenomenon, he proposes an account of the mental life of split-brain subjects and argues that certain facts about these subjects offer further support for his theory of unity. Finally, addressing the topic of the nature of persons and personal identity, Tye finds the two great historical accounts - the ego theory and the bundle theory - lacking, and he makes an alternative proposal.