Ground of Being
Why is there anything at all and not just nothing? What happened before the beginning of time? What are the basic building blocks and laws of the physical world? These and similar questions touch on the very foundation of all existence.
Why is there something and not just nothing? This is the ultimate question of all questions.
What is "time"? This question not only moved the church father Augustine, but is still a fundamental question for our understanding of the world today.
Foundation of Physics
The further unification of physical theories - in particular the merging of quantum physics and gravity - presents physicists with major challenges. What potential solutions might be identified?