This paper explores the phenomenon of thought insertion, an experience reported by some schizophrenics where it is believed that other persons or forces are inserting thoughts into their minds. This relatively circumscribed symptom of schizophrenia raises difficult questions concerning our sense of agency for our thoughts. How is it possible that persons can think that their thoughts are not their own? Gallagher, drawing on Husserl’s early work on timeconsciousness, provides a subtle and sophisticated answer to this problem, suggesting that protention may underlie our sense of agency for thinking and that the experience of inserted thoughts may occur in the event of an intermittent failure in this protentional function. More recent Husserl ...