It's the gravity that shapes the large scale structure of the universe, even though it is the weakest of four categories of forces

Nothing is fool-proof to a sufficiently talented fool.

Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe?

I think the next century will be the century of complexity.

Scientists tend to risk theories they admire

To boldly go where no one has gone before

I have sold more books on physics than Madonna has on sex.