Ai Weiwei

Now the British are coming. I think Cameron should ask the Chinese government not to make people 'disappear' or to jail them merely because they have different opinions.

Chinese citizens have never had the right to really express their opinions; in the constitution it says you can, but in the real world it is more dangerous. In the west people think it's a right they're born with. Here it's a right given by the government, and one that's not really practised.

I see the Beijing National Stadium as an architectural project. I accepted Herzog and De Meuron's invitation to collaborate on the design, and our proposal won the competition. From beginning to end, I stayed with the project. I am committed to fostering relationships between a city and its architecture.

This week, the world gathers in Beijing for the 2008 Olympic games. This is the extraordinary moment China has been dreaming of for 100 years. People have been longing for this moment, because it symbolises a turning point in China's relationship with the outside world.

I call on people to be 'obsessed citizens,' forever questioning and asking for accountability. That's the only chance we have today of a healthy and happy life.

So maybe there are three parts in my life - earlier background living in exile in Xinjiang in a very political circumstance, then later the United States from 24 to 36 years old. I was quite equipped with liberal thinking. Then the Internet. If there is no Internet, of course, I cannot really exercise my opinion or my ideas.

Widespread state control over art and culture has left no room for freedom of expression in the country. For more than 60 years, anyone with a dissenting opinion has been suppressed. Chinese art is merely a product: it avoids any meaningful engagement. There is no larger context. Its only purpose is to charm viewers with its ambiguity.

China and the U.S. are two societies with very different attitudes towards opinion and criticism. In China, I am constantly under surveillance. Even my slightest, most innocuous move can - and often is - censored by Chinese authorities.

I'm always followed by two or three cars and have police around. Even walking in the park, you see them taking photos behind the bushes and trying to videotape everything.

Because of the economic crisis, China and the United States are bound together. This is a totally new phenomenon, and nobody will fight for ideology anymore. It's all about business.

As a person, I was born to give out my opinions. By giving out my opinions, I realize who I am. As long as I can communicate, I'm not so lonely. If I cannot travel, or do art, or have company, if they take away all my belongings, it doesn't matter at all.

Historically, China is not a nation of sportsmen. We traditionally put more emphasis on being close to nature than pushing endlessly to excel. A philosophy that values tranquil contemplation of the landscape cannot easily be adapted to the Olympic slogan of 'higher, stronger, faster.'