The simplest way out of the puzzle of time travel is to say that it can't be done. That's very likely the… — Sean M. Carroll Copy Share Image
If time travel were possible, you still wouldn't be able to change the past - it's already happened! — Sean M. Carroll Copy Share Image
The idea that time is an illusion is an old one, predating any Times Square ball drop or champagne celebrations. It reaches… — Sean M. Carroll Copy Share Image
Nothing in the fact that there was a first moment in time necessitates that an external something is required to bring the… — Sean M. Carroll Copy Share Image
I'm trying to understand how time works. And that's a huge question that has lots of different aspects to it. — Sean M. Carroll Copy Share Image
The asymmetry of time, the arrow that points from past to future, plays an unmistakable role in our everyday lives: it accounts… — Sean M. Carroll Copy Share Image
The particular aspect of time that I'm interested in is the arrow of time: the fact that the past is different from… — Sean M. Carroll Copy Share Image
The speed of time is 1 hour per hour, no matter what else is going on in the universe. — Sean M. Carroll Copy Share Image
Someday, when the ultimate laws of physics are in our grasp, we may discover that the notion of time isn't actually essential.… — Sean M. Carroll Copy Share Image
I'm trying to understand cosmology, why the Big Bang had the properties it did. And it's interesting to think that connects directly… — Sean M. Carroll Copy Share Image
The weird thing about the arrow of time is that it's not to be found in the underlying laws of physics. It's… — Sean M. Carroll Copy Share Image
The arrow of time doesn't move forward forever. There's a phase in the history of the universe where you go from low… — Sean M. Carroll Copy Share Image
There's no verbs before time itself exists, right? There's no popping into existence, there's no fluctuating, there's no quantum mechanical craziness, there… — Sean M. Carroll Copy Share Image
I'm a big believer that science is part of a larger cultural thing. Science is not all by itself. — Sean M. Carroll Copy Share Image
One of the tragedies of our educational system is that we've taken this incredibly interesting subject - how the universe works - and made… — Sean M. Carroll Copy Share Image
I've loved physics from a young age, but I've also been interested in all sorts of big questions, from philosophy to evolution and neuroscience.… — Sean M. Carroll Copy Share Image
The simplest way out of the puzzle of time travel is to say that it can't be done. That's very likely the right answer.… — Sean M. Carroll Copy Share Image
Our conviction that green cheese makes up a negligible fraction of the Moon's interior comes not from direct observation but from the gross incompatibility… — Sean M. Carroll Copy Share Image
The fact that you can remember yesterday but not tomorrow is because of entropy. The fact that you're always born young and then you… — Sean M. Carroll Copy Share Image
As we get older, we tend to grow quite fond of the planets of belief we have constructed for ourselves. We build elaborate defense… — Sean M. Carroll Copy Share Image
If time travel were possible, you still wouldn't be able to change the past - it's already happened! — Sean M. Carroll Copy Share Image
We seek an understanding of the laws of nature and of our particular universe in which everything makes sense to us. We do not… — Sean M. Carroll Copy Share Image
People don't realize how many aspects of our lives are touched in one way or another by not just the discoveries, the technological breakthroughs,… — Sean M. Carroll Copy Share Image
Something can be real - actually existing, not merely illusory - and yet not be fundamental. Scientists used to think that heat, for example,… — Sean M. Carroll Copy Share Image
