Science isn't just about solving this or that puzzle. It's about understanding how the world works: the whole world from the vastness of the cosmos to the particularity of an individual human life. It's worth thinking about how all the different ways we have to talk about the world manage to fit together.

A full understanding of what happens in our everyday lives needs to take into account what happened at the Big Bang. And not only is that intrinsically interesting and just kind of cool to think about, but it's also a mystery that is not given much attention by working scientists; it's a little bit underappreciated.

The idea that time is an illusion is an old one, predating any Times Square ball drop or champagne celebrations. It reaches back to the days of Heraclitus and Parmenides, pre-Socratic thinkers who are staples of introductory philosophy courses.

If time travel were possible, you still wouldn't be able to change the past - it's already happened!

Each one of us has our own evolution of life, and each one of us goes through different tests which are unique and challenging. But certain things are common. And we do learn things from each other's experience. On a spiritual journey, we all have the same destination.

Ultimately, what we're trying to do for our customers or our guests is create magical travel experiences.

I mean, I'd love to have a private jet - I know people who fly by private jet all the time... I've hitched a ride a few times and it is not overrated at all; it's a great way to travel!

Sometimes you like the personal adventure implicit in the making of a film, and sometimes you like your part in a film, and sometimes you like the final result.