It may be that we live in an endless universe, both in space and in time. And there've been Bangs in the past, and there will be Bangs in the future.

If the universe sprung into existence and then expanded exponentially, you get gravitational waves traveling through space-time. These would fill the universe, a pattern of echoes of the inflation itself.

Some day we'll move into space and start ensuring the survival of our species beyond Earth, whether it happens in a hundred years or a thousand.

Quantum physics is one of the hardest things to understand intuitively, because essentially the whole point is that our classical picture is wrong.

We are speaking to the intelligence of Canadians, not to their emotion.

I'm not a mom, but I think the word 'mother' is about wisdom.

Habit is something you can do without thinking, which is why most of us have so many of them.

I grew up loving actresses or actors who were very classy but who seemed a little bit mysterious because you couldn't grasp what they're really thinking. I mean, Grace Kelly always looked impossibly glamorous, yet you could always see there was something behind her eyes.