India, July 14 -- What motivated you to dedicate your life to gravity research?

It was always clear in my mind. When I started writing the book, it became clear that there could never have been anything else. I think gravity is fun and almost teasing us, right? It's always there all around us, and because we know it's going to be something we can't avoid, it pushes us to challenge it. We all like to play with it by dropping things and seeing if we can prevent them from falling.

From the point of view of theoretical physics, what I like about it is its beautiful symmetry. It's universal and affects everyone in the same way, which is beautiful at a fundamental level.

What is the universality of gravity? In the book, you recall this throu...