The world might not be what you think. The world has never referred just to the space between heaven and earth, our planet, or the portion of it that we can see and touch. The world is a concept that describes the sphere in which everything exists. The problem is it might not exist itself.

In this course, Professor Markus Gabriel takes a tour de force of metaphysics, ontology and epistemology, from ancient myths, to the pre-Socratics, to Kant, Frege, and Wittgenstein to explore ideas of existence, reality and being- why they fail, and what it means.

In this course, you will learn: