An introduction to some of the central problems of philosophy. Examples of questions that may be considered include: What is sound reasoning? What can we know? What is ultimately real? Is morality rational? Do humans have free will? Is there a God? What is consciousness? Should we fear death? What is justice? Note: PHL100Y1 and PHL101Y1 are both broad introductions to philosophy, and each is appropriate for students with no prior experience with the subject.