Contents: The most precious thing -- Science and hope -- The man in the moon and the face on mars -- Aliens -- Spoofing and secrecy -- Hallucinations -- The demon-haunted world -- On the distinction between true and false visions -- Therapy -- The dragon in my garage -- The city of grief -- The fine art of baloney detection -- Obsessed with reality -- Antiscience -- Newton's sleep -- When scientists know sin -- The marriage of skepticism and wonder -- The wind makes dust -- No such things as a dumb question -- House on fire -- The path to freedom -- Significance junkies -- Maxwell and the nerds -- Science and witchcraft -- Real patriots ask questions -- Acknowledgments.