There might never be another 'Crouching Tiger.' There might be something that's even better than 'Crouching Tiger.'

Acting is not just impersonating your character.

Playing Aung San Suu Kyi was a journey in itself. She represents many things for many people and for many reasons. Although I have played many important roles in my life, I can say that this role has been a journey of self-realisation.

They won't take you seriously because you are a girl. These guys had to understand that you are just as tough as them, and you have to take them on.

Movies cater to what the audiences want.

In one take, I had to do 24 combat sequences, which is hard. It makes you think, 'I'd better get on my toes again.'

I did ballet, piano and all that - my brother did martial arts, my passion.

I believe all of us want to do good for our country.

I don't plan to go out and do action or not do action.

When you're a teenager, you could do a lot more crazy things, and your body recovers faster.

Jackie Chan is like a big bro to me.

I love my martial arts and action movies. They give another dimension to the acting world: the emotional plus the physical.

In many ways, I feel I'm still as physically fit as I was 20 years ago because I've always been athletic.

When someone acknowledges you for something that they think about you, it's a huge compliment.

Unfortunately, many parents reject helmets for their kids out of a mistaken perception that helmets are unsafe for children.

Today, tomorrow and every day, we will see at least 2,000 young children killed or seriously injured on the world's roads. This is unacceptable, preventable, and we have to stop it. We have the vaccines for this disease: helmets, seatbelts, speed enforcement, safe road design. We just need to use them.

Every time I choose to do a movie, I make the decision because of what I think I can learn from it.

Playing a sinner is very liberating!

In Europe and America, you never see a director pick up a camera. They all sit behind monitors.

When you face up to bad things in the past, the most important thing is not to allow them to happen today or in the future, and as storytellers, we must play our part in that.

With an award like the Asian Film Awards, we've sent a message saying that 'Asian Cinema is here, it matters, and more importantly, we are all part of the same fraternity!' The AFA is truly, then, an award for Asia, by Asia.

I have very supportive parents who said, 'Go and do what you want to do. Home is always here for you, and if you don't like it out there, come back. You can always do something different.' So when you have an option like that, you are able to choose roles or choose the things you want to be in.

If you were ever a ballerina, you know the pain: just to be able to look like it's all so light, but when they take off their shoes, it's all bloody.

It's very important that I'm approaching a character that I've either not played before, or I can give it a different take.

'The Lady' is an incredible love story about how a family was cut off from each other, about sacrifice, about the ability to put the needs of million of people before your own.

As an actor, you are always looking for roles that will challenge you, and when I came upon Aung San Suu Kyi, it wasn't just about that but also about stepping into the shoes of someone who means so much to millions of people.

I think that learning Burmese has to have been one of the most challenging things that I have had to do for a movie.

I had an amazing teacher, who was Burmese, and she was living in Paris at the time, and she is one of very few who doesn't actually receive a credit in the film because she still has family over there.

The human brain has 100 billion neurons, each neuron connected to 10 thousand other neurons. Sitting on your shoulders is the most complicated object in the known universe.

In string theory, all particles are vibrations on a tiny rubber band; physics is the harmonies on the string; chemistry is the melodies we play on vibrating strings; the universe is a symphony of strings, and the 'Mind of God' is cosmic music resonating in 11-dimensional hyperspace.

What we usually consider as impossible are simply engineering problems... there's no law of physics preventing them.

It's pointless to have a nice clean desk, because it means you're not doing anything.

One in 200 stars has habitable Earth-like planets surrounding it - in the galaxy, half a billion stars have Earth-like planets going around them - that's huge, half a billion. So when we look at the night sky, it makes sense that someone is looking back at us.

It turns out that the left temporal lobe, if there's a lesion there, will create hyper-religiosity. People become super-religious. They see demons and spirits everywhere. We think Joan of Arc may have had it.

The job market of the future will consist of those jobs that robots cannot perform. Our blue-collar work is pattern recognition, making sense of what you see. Gardeners will still have jobs because every garden is different. The same goes for construction workers. The losers are white-collar workers, low-level accountants, brokers, and agents.

If you want to see a black hole tonight, tonight just look in the direction of Sagittarius, the constellation. That's the center of the Milky Way Galaxy and there's a raging black hole at the very center of that constellation that holds the galaxy together.

Chemistry is the melodies you can play on vibrating strings.

The universe is a symphony of strings, and the mind of God that Einstein eloquently wrote about for thirty years would be cosmic music resonating through eleven-dimensional hyper space.

We have to realize that science is a double-edged sword. One edge of the sword can cut against poverty, illness, disease and give us more democracies, and democracies never war with other democracies, but the other side of the sword could give us nuclear proliferation, biogerms and even forces of darkness.

I have concluded that we are in a world made by rules created by an intelligence.

In Einstein's equation, time is a river. It speeds up, meanders, and slows down. The new wrinkle is that it can have whirlpools and fork into two rivers. So, if the river of time can be bent into a pretzel, create whirlpools and fork into two rivers, then time travel cannot be ruled out.

Global warming is controversial, of course, but the controversy is mainly over whether human activity is driving it.

No matter how beautiful the theory, one irritating fact can dismiss the entire formulism, so it has to be proven.

Humans are natural-born scientists. When we're born, we want to know why the stars shine. We want to know why the sun rises.

Time travel and teleportation will have to wait. It may take centuries to master these technology. But within the coming decades, we will understand dark matter, perhaps test string theory, find planets which can harbor life, and maybe have Brain 2.0, i.e. our consciousness on a disk which will survive even after we die.

A force field is basically an invisible shield. You push a button and all of a sudden a bubble forms around you which is impenetrable. It can stop bullets, it can stop ray gun blasts and we realized force fields are actually a little bit difficult to create.

Some advice: keep the flame of curiosity and wonderment alive, even when studying for boring exams. That is the well from which we scientists draw our nourishment and energy. And also, learn the math. Math is the language of nature, so we have to learn this language.

One problem with politics is that it is a zero sum game, i.e. politicians argue how to cut the pie smaller and smaller, by reshuffling pieces of the pie. I think this is destructive. Instead, we should be creating a bigger pie, i.e. funding the science that is the source of all our prosperity. Science is not a zero sum game.

First of all, the Big Bang wasn't very big. Second of all, there was no bang. Third, Big Bang Theory doesn't tell you what banged, when it banged, how it banged. It just said it did bang. So the Big Bang theory in some sense is a total misnomer.

Global warming is actually a misnomer. It should be global extremes and global swings, because you add - as you add more energy into the atmosphere, it sloshes around. Energy doesn't simply uniformly warm up the planet. And that means droughts in one area, enormous snowstorms in another area, 100-year floods here, 100-year forest fires there.