This is the last book of Carl Sagan, an astronomer, astrophysicist and an outstanding popularizer of science, published after his death. This book, dedicated to one of his favorite topics - the human mind and the fight against pseudoscientific stupidity - is a kind of summary of all his work. Myths about Atlantis and Lemuria, faces on Mars and encounters with aliens, magic and reincarnation, clairvoyance and Bigfoot, creationism and astrology - Sagan consistently and ruthlessly exposes the myths created by ignorance, fear and self-interest.