Is the mind the same as the brain, or do we have souls? Can you really experience anything objectively? Can computers think, or fall in love? Can computers be creative? What is consciousness? Can we really know what it feels like to be a bat? When you have a toothache, is the pain in your mouth or in your brain? What is an emotion? Is love just a feeling? Are emotions irrational? Which would you rather be - an unhappy human being or a happy dog? What is the meaning of life? Is happiness the most important purpose in life? Is there life after death? Is it always better to have more choices? Does freewill really exist? If there is no freewill, should we punish people at all? If God knows what you will do tomorrow, do you still have freewill? Does God exist? If God exists, why is there so much evil in the world? Can God create a stone so heavy that he cannot lift? Can there be two almighty Gods? Can there be morality without God? What is the best moral system? Is morality relative? What is friendship and why do we need it? What is art? Is there progress in art? Can food be art? Is it wrong to spend money on expensive food when people are dying of hunger? If someone is drowning and you refuse to help, are you responsible for his death? Why do we punish people? Is it alright to torture terrorists to extract information? When is it ok, if ever, to disobey the law? Is it the main purpose of law to promote morality? Should governments penalize people for unhealthy lifestyles? Why ban drugs and not alcohol or trans-fat? How much freedom should people have? Are people free to sell themselves into slavery? Why think there are universal human rights? Is democracy the same as decision by the majority? Should people who pay more taxes get more votes? Is democracy suitable for all countries? When should governments intervene in the market? Is there a difference between free trade and fair trade? What is wrong, if anything, about protectionism? Is patriotism irrational? Can wars ever be just? Should people have the right to live in any country they wish? Is the preservation of culture a good reason to limit immigration? Is race a biological category or a social construct? Are you the same person you were ten years ago? What is a person? Is it the mind, or the body? Do we think with language or pictures? Why do we dream? Can animals reason? What about fish, oysters and tomatoes? Do animals have rights? What about fish, oysters and tomatoes? If we eat chickens, why not dogs, dolphins, or babies? If super-intelligent aliens want to eat humans, are they wrong? If meat can be grown using stem cells, is there any reason not to eat meat? Why should we respect the dead? Should we fear death? Is life meaningless if we can live forever? What are numbers and do they really exist? Does Sherlock Holmes exist? Why is there something rather than nothing? What is time? Does time flow? How fast does it flow? Can something be at two places at the same time? Is time travel possible? If you can travel back in time, can you kill your earlier self? If you go back in time and teach young Einstein relativity theory, where does the idea come from? Are there parallel universes? Does every event have a cause? "This sentence is false." Is it true or false? "It will rain a week later." Is it true or false or neither? Is truth relative, or a matter of opinion? How do you know you are not dreaming right now? If we live in a computer simulation, does it make a difference to the meaning of life? Would you choose to live in a computer simulation if it will make you a lot happier? Can we be certain of anything? What is science? Is our universe real? Why is mathematics so important in science? Is mathematics the same as logic? What are numbers? Why believe in electrons and blackholes if we can't see them? Can there be two different theories of the world, both true and complete? How should we distinguish between good and bad scientific theories? Is science compatible with religion? Is there progress in philosophy? What is philosophy anyway?
