My definition of art has always been the same. It is about freedom of expression, a new way of communication. It is never about exhibiting in museums or about hanging it on the wall.

During the days in detention, I thought most about the moon.

China hasn't only existed for one day. Now, the whole nation has become richer and it's become a problem. The problem is universal. The factor is big. Everybody has to rethink the balance of the world and the whole landscape.

Measuring national prestige by gold medals is like using Viagra to judge the potency of a man.

Many people are going to use [Beijing National Stadium], which makes it more meaningful. If we don't design it, somebody else has to design it.

Your own acts tell the world who you are and what kind of society you think it should be.

I don't think China has professional museums - not in the past, present, or near future.