* Have you ever wondered what your pet is thinking? * Or asked yourself if aliens really exist? * Have you pondered the meaning of life or tried to think about nothing, absolutely nothing at all? These are some of life's biggest questions , and you are a daring thinker for even thinking about them! So open your mind and prepare to explore some of philosophy's biggest, boldest ideas --from the ridiculously silly to the strikingly serious. Each question...